679189938 has 16 divisors (see below), whose sum is σ = 1552434240. Its totient is φ = 194054256.

The previous prime is 679189919. The next prime is 679189949. The reversal of 679189938 is 839981976.

It is a super-2 number, since 2×679189938² = 922597943760887688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8085553 + ... + 8085636.

It is an arithmetic number, because the mean of its divisors is an integer number (97027140).

Almost surely, 2^679189938 is an apocalyptic number.

679189938 is an abundant number, since it is smaller than the sum of its proper divisors (873244302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679189938 is a wasteful number, since it uses less digits than its factorization.

679189938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171201.

The product of its digits is 5878656, while the sum is 60.

The square root of 679189938 is about 26061.2727624727. The cubic root of 679189938 is about 879.0166089523.

The spelling of 679189938 in words is "six hundred seventy-nine million, one hundred eighty-nine thousand, nine hundred thirty-eight".