400529444 has 12 divisors (see below), whose sum is σ = 801058944. Its totient is φ = 171655464.

The previous prime is 400529431. The next prime is 400529453. The reversal of 400529444 is 444925004.

400529444 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 400529444.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7152284 + ... + 7152339.

It is an arithmetic number, because the mean of its divisors is an integer number (66754912).

Almost surely, 2^400529444 is an apocalyptic number.

It is an amenable number.

400529444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

400529444 is a wasteful number, since it uses less digits than its factorization.

400529444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14304634 (or 14304632 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 400529444 is about 20013.2317230376. The cubic root of 400529444 is about 737.1312378019.

The spelling of 400529444 in words is "four hundred million, five hundred twenty-nine thousand, four hundred forty-four".