400431246 has 32 divisors (see below), whose sum is σ = 836559360. Its totient is φ = 127617504.

The previous prime is 400431233. The next prime is 400431257. The reversal of 400431246 is 642134004.

It is a super-2 number, since 2×400431246² = 320690365546225032, which contains 22 as substring.

It is a congruent 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, 6751 + ... + 29093.

It is an arithmetic number, because the mean of its divisors is an integer number (26142480).

Almost surely, 2^400431246 is an apocalyptic number.

400431246 is an abundant number, since it is smaller than the sum of its proper divisors (436128114).

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

400431246 is a wasteful number, since it uses less digits than its factorization.

400431246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22480.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 400431246 is about 20010.7782457355. The cubic root of 400431246 is about 737.0709919359.

The spelling of 400431246 in words is "four hundred million, four hundred thirty-one thousand, two hundred forty-six".