400144412 has 12 divisors (see below), whose sum is σ = 716537976. Its totient is φ = 195419280.

The previous prime is 400144403. The next prime is 400144439. The reversal of 400144412 is 214441004.

It is a happy number.

It is a congruent number.

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, 1163039 + ... + 1163382.

It is an arithmetic number, because the mean of its divisors is an integer number (59711498).

Almost surely, 2^400144412 is an apocalyptic number.

It is an amenable number.

400144412 is a deficient number, since it is larger than the sum of its proper divisors (316393564).

400144412 is a wasteful number, since it uses less digits than its factorization.

400144412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326468 (or 2326466 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 400144412 is about 20003.6099742022. The cubic root of 400144412 is about 736.8949587855.

Adding to 400144412 its reverse (214441004), we get a palindrome (614585416).

The spelling of 400144412 in words is "four hundred million, one hundred forty-four thousand, four hundred twelve".