400407368 has 64 divisors (see below), whose sum is σ = 840585600. Its totient is φ = 177914880.

The previous prime is 400407347. The next prime is 400407373. The reversal of 400407368 is 863704004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184208 + ... + 186368.

It is an arithmetic number, because the mean of its divisors is an integer number (13134150).

Almost surely, 2^400407368 is an apocalyptic number.

It is an amenable number.

400407368 is an abundant number, since it is smaller than the sum of its proper divisors (440178232).

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

400407368 is a wasteful number, since it uses less digits than its factorization.

400407368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 400407368 is about 20010.1816083713. The cubic root of 400407368 is about 737.0563409555.

The spelling of 400407368 in words is "four hundred million, four hundred seven thousand, three hundred sixty-eight".