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39996829 = 291379201
BaseRepresentation
bin1001100010010…
…0110110011101
32210021001100001
42120210312131
540214344304
63545134301
7663652555
oct230446635
983231301
1039996829
1120639234
121148a391
138395282
145452165
1537a0da4
hex2624d9d

39996829 has 4 divisors (see below), whose sum is σ = 41376060. Its totient is φ = 38617600.

The previous prime is 39996809. The next prime is 39996877. The reversal of 39996829 is 92869993.

39996829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92869993 = 268934537.

It can be written as a sum of positive squares in 2 ways, for example, as 15760900 + 24235929 = 3970^2 + 4923^2 .

It is a cyclic number.

It is not a de Polignac number, because 39996829 - 25 = 39996797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39996829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39996809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689572 + ... + 689629.

It is an arithmetic number, because the mean of its divisors is an integer number (10344015).

Almost surely, 239996829 is an apocalyptic number.

It is an amenable number.

39996829 is a deficient number, since it is larger than the sum of its proper divisors (1379231).

39996829 is a wasteful number, since it uses less digits than its factorization.

39996829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379230.

The product of its digits is 1889568, while the sum is 55.

The square root of 39996829 is about 6324.3046258067. The cubic root of 39996829 is about 341.9861518736.

The spelling of 39996829 in words is "thirty-nine million, nine hundred ninety-six thousand, eight hundred twenty-nine".

Divisors: 1 29 1379201 39996829