399250678004 has 12 divisors (see below), whose sum is σ = 703715224800. Its totient is φ = 198189185208.

The previous prime is 399250677989. The next prime is 399250678007. The reversal of 399250678004 is 400876052993.

It is a happy number.

It is a super-2 number, since 2×399250678004² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399250678007) 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, 359037824 + ... + 359038935.

It is an arithmetic number, because the mean of its divisors is an integer number (58642935400).

Almost surely, 2^399250678004 is an apocalyptic number.

It is an amenable number.

399250678004 is a deficient number, since it is larger than the sum of its proper divisors (304464546796).

399250678004 is a wasteful number, since it uses less digits than its factorization.

399250678004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718076902 (or 718076900 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 399250678004 in words is "three hundred ninety-nine billion, two hundred fifty million, six hundred seventy-eight thousand, four".