391679999998 has 32 divisors (see below), whose sum is σ = 707588236800. Its totient is φ = 158848586784.

The previous prime is 391679999993. The next prime is 391680000007. The reversal of 391679999998 is 899999976193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391679999993) 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, 594093 + ... + 1065976.

It is an arithmetic number, because the mean of its divisors is an integer number (22112132400).

Almost surely, 2^391679999998 is an apocalyptic number.

391679999998 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

391679999998 is a deficient number, since it is larger than the sum of its proper divisors (315908236802).

391679999998 is a wasteful number, since it uses less digits than its factorization.

391679999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660984.

The product of its digits is 4821232752, while the sum is 88.

The spelling of 391679999998 in words is "three hundred ninety-one billion, six hundred seventy-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".