39904949259 has 24 divisors (see below), whose sum is σ = 65892983520. Its totient is φ = 22796546688.

The previous prime is 39904949233. The next prime is 39904949261. The reversal of 39904949259 is 95294940993.

39904949259 is a `hidden beast` number, since 3 + 9 + 9 + 0 + 494 + 92 + 59 = 666.

It is not a de Polignac number, because 39904949259 - 2⁸ = 39904949003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 39904949196 and 39904949205.

It is not an unprimeable number, because it can be changed into a prime (39904949059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148279 + ... + 319055.

It is an arithmetic number, because the mean of its divisors is an integer number (2745540980).

Almost surely, 2^39904949259 is an apocalyptic number.

39904949259 is a deficient number, since it is larger than the sum of its proper divisors (25988034261).

39904949259 is a wasteful number, since it uses less digits than its factorization.

39904949259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174499 (or 174496 counting only the distinct ones).

The product of its (nonzero) digits is 28343520, while the sum is 63.

The spelling of 39904949259 in words is "thirty-nine billion, nine hundred four million, nine hundred forty-nine thousand, two hundred fifty-nine".