400352344 has 80 divisors (see below), whose sum is σ = 922649400. Its totient is φ = 162400896.

The previous prime is 400352339. The next prime is 400352371. The reversal of 400352344 is 443253004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 364404 + ... + 365500.

Almost surely, 2^400352344 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 400352344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461324700).

400352344 is an abundant number, since it is smaller than the sum of its proper divisors (522297056).

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

400352344 is a wasteful number, since it uses less digits than its factorization.

400352344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 400352344 is about 20008.8066610680. The cubic root of 400352344 is about 737.0225773028.

The spelling of 400352344 in words is "four hundred million, three hundred fifty-two thousand, three hundred forty-four".