39907620864 has 96 divisors (see below), whose sum is σ = 118216098000. Its totient is φ = 13302521856.

The previous prime is 39907620811. The next prime is 39907620869. The reversal of 39907620864 is 46802670993.

It is a happy number.

39907620864 is a `hidden beast` number, since 3 + 9 + 9 + 0 + 7 + 620 + 8 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 39907620864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39907620869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305559 + ... + 416150.

Almost surely, 2^39907620864 is an apocalyptic number.

It is an amenable number.

39907620864 is an abundant number, since it is smaller than the sum of its proper divisors (78308477136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39907620864 is an equidigital number, since it uses as much as digits as its factorization.

39907620864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721740 (or 721714 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 39907620864 in words is "thirty-nine billion, nine hundred seven million, six hundred twenty thousand, eight hundred sixty-four".