393922432 has 32 divisors (see below), whose sum is σ = 792882720. Its totient is φ = 194924544.

The previous prime is 393922423. The next prime is 393922433. The reversal of 393922432 is 234229393.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 393922391 and 393922400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393922433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3448 + ... + 28279.

It is an arithmetic number, because the mean of its divisors is an integer number (24777585).

Almost surely, 2^393922432 is an apocalyptic number.

393922432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

393922432 is an abundant number, since it is smaller than the sum of its proper divisors (398960288).

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

393922432 is an equidigital number, since it uses as much as digits as its factorization.

393922432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31838 (or 31826 counting only the distinct ones).

The product of its digits is 69984, while the sum is 37.

The square root of 393922432 is about 19847.4792354092. The cubic root of 393922432 is about 733.0555803963.

The spelling of 393922432 in words is "three hundred ninety-three million, nine hundred twenty-two thousand, four hundred thirty-two".