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8000049 = 32666683
BaseRepresentation
bin11110100001001000110001
3120001110000010
4132201020301
54022000144
6443245133
7124666521
oct36411061
916043003
108000049
114574612
1228197a9
131871475
1410c3681
15a805b9
hex7a1231

8000049 has 4 divisors (see below), whose sum is σ = 10666736. Its totient is φ = 5333364.

The previous prime is 8000033. The next prime is 8000051. The reversal of 8000049 is 9400008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8000049 - 24 = 8000033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7999989 and 8000034.

It is not an unprimeable number, because it can be changed into a prime (8000009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333339 + ... + 1333344.

It is an arithmetic number, because the mean of its divisors is an integer number (2666684).

Almost surely, 28000049 is an apocalyptic number.

It is an amenable number.

8000049 is a deficient number, since it is larger than the sum of its proper divisors (2666687).

8000049 is a wasteful number, since it uses less digits than its factorization.

8000049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666686.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 8000049 is about 2828.4357867910. The cubic root of 8000049 is about 200.0004083325. Note that the first 3 decimals are identical.

The spelling of 8000049 in words is "eight million, forty-nine", and thus it is an aban number and an uban number.

Divisors: 1 3 2666683 8000049