392640012 has 36 divisors (see below), whose sum is σ = 1000095096. Its totient is φ = 129879360.

The previous prime is 392639999. The next prime is 392640013. The reversal of 392640012 is 210046293.

392640012 is a `hidden beast` number, since 3 + 9 + 2 + 640 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (392640013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36913 + ... + 46344.

Almost surely, 2^392640012 is an apocalyptic number.

It is an amenable number.

392640012 is an abundant number, since it is smaller than the sum of its proper divisors (607455084).

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

392640012 is a wasteful number, since it uses less digits than its factorization.

392640012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83398 (or 83393 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 392640012 is about 19815.1460252000. The cubic root of 392640012 is about 732.2592246814.

The spelling of 392640012 in words is "three hundred ninety-two million, six hundred forty thousand, twelve".