393012992 has 36 divisors (see below), whose sum is σ = 794461920. Its totient is φ = 194009088.

The previous prime is 393012989. The next prime is 393013007. The reversal of 393012992 is 299210393.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10508 + ... + 29940.

Almost surely, 2^393012992 is an apocalyptic number.

393012992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 393012992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397230960).

393012992 is an abundant number, since it is smaller than the sum of its proper divisors (401448928).

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

393012992 is an equidigital number, since it uses as much as digits as its factorization.

393012992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19528 (or 19514 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 393012992 is about 19824.5552787446. Note that the first 3 decimals coincide. The cubic root of 393012992 is about 732.4910159762.

The spelling of 393012992 in words is "three hundred ninety-three million, twelve thousand, nine hundred ninety-two".