679299958 has 4 divisors (see below), whose sum is σ = 1018949940. Its totient is φ = 339649978.

The previous prime is 679299949. The next prime is 679299961. The reversal of 679299958 is 859992976.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×679299958² = 922896865877603528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679299958.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 169824988 + ... + 169824991.

It is an arithmetic number, because the mean of its divisors is an integer number (254737485).

Almost surely, 2^679299958 is an apocalyptic number.

679299958 is a deficient number, since it is larger than the sum of its proper divisors (339649982).

679299958 is a wasteful number, since it uses less digits than its factorization.

679299958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339649981.

The product of its digits is 22044960, while the sum is 64.

The square root of 679299958 is about 26063.3834718365. The cubic root of 679299958 is about 879.0640695032.

The spelling of 679299958 in words is "six hundred seventy-nine million, two hundred ninety-nine thousand, nine hundred fifty-eight".