393345992 has 32 divisors (see below), whose sum is σ = 795977280. Its totient is φ = 181151040.

The previous prime is 393345991. The next prime is 393346003. The reversal of 393345992 is 299543393.

It is not an unprimeable number, because it can be changed into a prime (393345991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47213 + ... + 54915.

It is an arithmetic number, because the mean of its divisors is an integer number (24874290).

Almost surely, 2^393345992 is an apocalyptic number.

It is an amenable number.

393345992 is an abundant number, since it is smaller than the sum of its proper divisors (402631288).

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

393345992 is a wasteful number, since it uses less digits than its factorization.

393345992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8213 (or 8209 counting only the distinct ones).

The product of its digits is 787320, while the sum is 47.

The square root of 393345992 is about 19832.9521756092. The cubic root of 393345992 is about 732.6978375102.

The spelling of 393345992 in words is "three hundred ninety-three million, three hundred forty-five thousand, nine hundred ninety-two".