399414688144 has 10 divisors (see below), whose sum is σ = 773865958310. Its totient is φ = 199707344064.

The previous prime is 399414688081. The next prime is 399414688213. The reversal of 399414688144 is 441886414993.

It can be written as a sum of positive squares in only one way, i.e., 375818041600 + 23596646544 = 613040^2 + 153612^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12481708989 + ... + 12481709020.

It is an arithmetic number, because the mean of its divisors is an integer number (77386595831).

Almost surely, 2^399414688144 is an apocalyptic number.

It is an amenable number.

399414688144 is a deficient number, since it is larger than the sum of its proper divisors (374451270166).

399414688144 is a wasteful number, since it uses less digits than its factorization.

399414688144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24963418017 (or 24963418011 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 61.

The spelling of 399414688144 in words is "three hundred ninety-nine billion, four hundred fourteen million, six hundred eighty-eight thousand, one hundred forty-four".