400412944 has 10 divisors (see below), whose sum is σ = 775800110. Its totient is φ = 200206464.

The previous prime is 400412867. The next prime is 400412959. The reversal of 400412944 is 449214004.

It can be written as a sum of positive squares in only one way, i.e., 223203600 + 177209344 = 14940^2 + 13312^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512889 + ... + 12512920.

It is an arithmetic number, because the mean of its divisors is an integer number (77580011).

Almost surely, 2^400412944 is an apocalyptic number.

It is an amenable number.

400412944 is a deficient number, since it is larger than the sum of its proper divisors (375387166).

400412944 is a wasteful number, since it uses less digits than its factorization.

400412944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25025817 (or 25025811 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 400412944 is about 20010.3209369565. The cubic root of 400412944 is about 737.0597623104.

Adding to 400412944 its reverse (449214004), we get a palindrome (849626948).

The spelling of 400412944 in words is "four hundred million, four hundred twelve thousand, nine hundred forty-four".