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39693349 = 82947881
BaseRepresentation
bin1001011101101…
…0110000100101
32202200122001001
42113122300211
540130141344
63534433301
7661250023
oct227326045
982618031
1039693349
1120451223
1211362831
1382ba0b7
1453b3713
153740ed4
hex25dac25

39693349 has 4 divisors (see below), whose sum is σ = 39742060. Its totient is φ = 39644640.

The previous prime is 39693319. The next prime is 39693439. The reversal of 39693349 is 94339693.

39693349 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.

It can be written as a sum of positive squares in 2 ways, for example, as 30052324 + 9641025 = 5482^2 + 3105^2 .

It is a cyclic number.

It is not a de Polignac number, because 39693349 - 27 = 39693221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39693299 and 39693308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39693319) 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, 23112 + ... + 24769.

It is an arithmetic number, because the mean of its divisors is an integer number (9935515).

Almost surely, 239693349 is an apocalyptic number.

It is an amenable number.

39693349 is a deficient number, since it is larger than the sum of its proper divisors (48711).

39693349 is an equidigital number, since it uses as much as digits as its factorization.

39693349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48710.

The product of its digits is 472392, while the sum is 46.

The square root of 39693349 is about 6300.2657880442. The cubic root of 39693349 is about 341.1190034221.

The spelling of 39693349 in words is "thirty-nine million, six hundred ninety-three thousand, three hundred forty-nine".

Divisors: 1 829 47881 39693349