399713964919 has 16 divisors (see below), whose sum is σ = 429821769600. Its totient is φ = 370550902176.

The previous prime is 399713964893. The next prime is 399713964953. The reversal of 399713964919 is 919469317993.

It is a cyclic number.

It is not a de Polignac number, because 399713964919 - 2⁵ = 399713964887 is a prime.

It is a super-2 number, since 2×399713964919² (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 (399713964019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142009 + ... + 905314.

It is an arithmetic number, because the mean of its divisors is an integer number (26863860600).

Almost surely, 2^399713964919 is an apocalyptic number.

399713964919 is a deficient number, since it is larger than the sum of its proper divisors (30107804681).

399713964919 is a wasteful number, since it uses less digits than its factorization.

399713964919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047774.

The product of its digits is 89282088, while the sum is 70.

The spelling of 399713964919 in words is "three hundred ninety-nine billion, seven hundred thirteen million, nine hundred sixty-four thousand, nine hundred nineteen".