39664290492 has 48 divisors (see below), whose sum is σ = 102942890400. Its totient is φ = 13207345920.

The previous prime is 39664290481. The next prime is 39664290521. The reversal of 39664290492 is 29409246693.

39664290492 is a `hidden beast` number, since 3 + 9 + 6 + 64 + 2 + 90 + 492 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93517 + ... + 296772.

It is an arithmetic number, because the mean of its divisors is an integer number (2144643550).

Almost surely, 2^39664290492 is an apocalyptic number.

It is an amenable number.

39664290492 is an abundant number, since it is smaller than the sum of its proper divisors (63278599908).

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

39664290492 is a wasteful number, since it uses less digits than its factorization.

39664290492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391243 (or 391235 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 39664290492 in words is "thirty-nine billion, six hundred sixty-four million, two hundred ninety thousand, four hundred ninety-two".