393922400 has 36 divisors (see below), whose sum is σ = 961665012. Its totient is φ = 157568640.

The previous prime is 393922393. The next prime is 393922423. The reversal of 393922400 is 4229393.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245402 + ... + 247001.

It is an arithmetic number, because the mean of its divisors is an integer number (26712917).

Almost surely, 2^393922400 is an apocalyptic number.

It is an amenable number.

393922400 is an abundant number, since it is smaller than the sum of its proper divisors (567742612).

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

393922400 is a wasteful number, since it uses less digits than its factorization.

393922400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492423 (or 492410 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 393922400 is about 19847.4784292615. The cubic root of 393922400 is about 733.0555605466.

The spelling of 393922400 in words is "three hundred ninety-three million, nine hundred twenty-two thousand, four hundred".