400432244 has 12 divisors (see below), whose sum is σ = 700897764. Its totient is φ = 200175744.

The previous prime is 400432237. The next prime is 400432283. The reversal of 400432244 is 442234004.

It can be written as a sum of positive squares in 2 ways, for example, as 242175844 + 158256400 = 15562^2 + 12580^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29294 + ... + 40730.

It is an arithmetic number, because the mean of its divisors is an integer number (58408147).

Almost surely, 2^400432244 is an apocalyptic number.

It is an amenable number.

400432244 is a deficient number, since it is larger than the sum of its proper divisors (300465520).

400432244 is a wasteful number, since it uses less digits than its factorization.

400432244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20194 (or 20192 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 400432244 is about 20010.8031822813. The cubic root of 400432244 is about 737.0716042726.

Adding to 400432244 its reverse (442234004), we get a palindrome (842666248).

The spelling of 400432244 in words is "four hundred million, four hundred thirty-two thousand, two hundred forty-four".