400432412 has 12 divisors (see below), whose sum is σ = 700952616. Its totient is φ = 200160240.

The previous prime is 400432387. The next prime is 400432423. The reversal of 400432412 is 214234004.

It is a super-2 number, since 2×400432412² = 320692233160275488, which contains 22 as substring.

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, 4958 + ... + 28730.

It is an arithmetic number, because the mean of its divisors is an integer number (58412718).

Almost surely, 2^400432412 is an apocalyptic number.

It is an amenable number.

400432412 is a deficient number, since it is larger than the sum of its proper divisors (300520204).

400432412 is a wasteful number, since it uses less digits than its factorization.

400432412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27988 (or 27986 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400432412 is about 20010.8073800134. The cubic root of 400432412 is about 737.0717073512.

Adding to 400432412 its reverse (214234004), we get a palindrome (614666416).

The spelling of 400432412 in words is "four hundred million, four hundred thirty-two thousand, four hundred twelve".