390994692 has 192 divisors, whose sum is σ = 1114767360. Its totient is φ = 105321600.

The previous prime is 390994691. The next prime is 390994697. The reversal of 390994692 is 296499093.

It is not an unprimeable number, because it can be changed into a prime (390994691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3654103 + ... + 3654209.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^390994692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390994692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557383680).

390994692 is an abundant number, since it is smaller than the sum of its proper divisors (723772668).

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

390994692 is a wasteful number, since it uses less digits than its factorization.

390994692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 51.

The square root of 390994692 is about 19773.5857142806. The cubic root of 390994692 is about 731.2349721800.

The spelling of 390994692 in words is "three hundred ninety million, nine hundred ninety-four thousand, six hundred ninety-two".