399864826994 has 16 divisors (see below), whose sum is σ = 607167247680. Its totient is φ = 197476883760.

The previous prime is 399864826967. The next prime is 399864827027. The reversal of 399864826994 is 499628468993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424667 + ... + 989985.

It is an arithmetic number, because the mean of its divisors is an integer number (37947952980).

Almost surely, 2^399864826994 is an apocalyptic number.

399864826994 is a deficient number, since it is larger than the sum of its proper divisors (207302420686).

399864826994 is a wasteful number, since it uses less digits than its factorization.

399864826994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569665.

The product of its digits is 1451188224, while the sum is 77.

The spelling of 399864826994 in words is "three hundred ninety-nine billion, eight hundred sixty-four million, eight hundred twenty-six thousand, nine hundred ninety-four".