679239147 has 4 divisors (see below), whose sum is σ = 905652200. Its totient is φ = 452826096.

The previous prime is 679239107. The next prime is 679239163. The reversal of 679239147 is 741932976.

It is a happy number.

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

It is not a de Polignac number, because 679239147 - 2⁷ = 679239019 is a prime.

It is a super-2 number, since 2×679239147² = 922731637634575218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679239096 and 679239105.

It is not an unprimeable number, because it can be changed into a prime (679239107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113206522 + ... + 113206527.

It is an arithmetic number, because the mean of its divisors is an integer number (226413050).

Almost surely, 2^679239147 is an apocalyptic number.

679239147 is a deficient number, since it is larger than the sum of its proper divisors (226413053).

679239147 is a wasteful number, since it uses less digits than its factorization.

679239147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226413052.

The product of its digits is 571536, while the sum is 48.

The square root of 679239147 is about 26062.2168473827. The cubic root of 679239147 is about 879.0378374194.

The spelling of 679239147 in words is "six hundred seventy-nine million, two hundred thirty-nine thousand, one hundred forty-seven".