400931960 has 128 divisors (see below), whose sum is σ = 1096804800. Its totient is φ = 129884160.

The previous prime is 400931941. The next prime is 400932013. The reversal of 400931960 is 69139004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164672 + ... + 167088.

Almost surely, 2^400931960 is an apocalyptic number.

400931960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400931960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548402400).

400931960 is an abundant number, since it is smaller than the sum of its proper divisors (695872840).

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

400931960 is a wasteful number, since it uses less digits than its factorization.

400931960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 400931960 is about 20023.2854447016. The cubic root of 400931960 is about 737.3780842234.

The spelling of 400931960 in words is "four hundred million, nine hundred thirty-one thousand, nine hundred sixty".