400044412 has 12 divisors (see below), whose sum is σ = 705591040. Its totient is φ = 198446976.

The previous prime is 400044397. The next prime is 400044419. The reversal of 400044412 is 214440004.

It is a self number, because there is not a number n which added to its sum of digits gives 400044412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400044419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393237 + ... + 394252.

Almost surely, 2^400044412 is an apocalyptic number.

It is an amenable number.

400044412 is a deficient number, since it is larger than the sum of its proper divisors (305546628).

400044412 is a wasteful number, since it uses less digits than its factorization.

400044412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787620 (or 787618 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 400044412 is about 20001.1102691826. The cubic root of 400044412 is about 736.8335679201.

Adding to 400044412 its reverse (214440004), we get a palindrome (614484416).

The spelling of 400044412 in words is "four hundred million, forty-four thousand, four hundred twelve".