400799232 has 160 divisors (see below), whose sum is σ = 1204684800. Its totient is φ = 131549184.

The previous prime is 400799183. The next prime is 400799237. The reversal of 400799232 is 232997004.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400799237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091913 + ... + 1092279.

It is an arithmetic number, because the mean of its divisors is an integer number (7529280).

Almost surely, 2^400799232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400799232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602342400).

400799232 is an abundant number, since it is smaller than the sum of its proper divisors (803885568).

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

400799232 is an equidigital number, since it uses as much as digits as its factorization.

400799232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 400799232 is about 20019.9708291496. The cubic root of 400799232 is about 737.2967058932.

The spelling of 400799232 in words is "four hundred million, seven hundred ninety-nine thousand, two hundred thirty-two".