913979 has 4 divisors (see below), whose sum is σ = 997080. Its totient is φ = 830880.

The previous prime is 913943. The next prime is 913981. The reversal of 913979 is 979319.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 913979 - 2⁸ = 913723 is a prime.

It is a super-2 number, since 2×913979² = 1670715224882, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 913979.

It is not an unprimeable number, because it can be changed into a prime (913999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41534 + ... + 41555.

It is an arithmetic number, because the mean of its divisors is an integer number (249270).

2⁹¹³⁹⁷⁹ is an apocalyptic number.

913979 is a deficient number, since it is larger than the sum of its proper divisors (83101).

913979 is a wasteful number, since it uses less digits than its factorization.

913979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83100.

The product of its digits is 15309, while the sum is 38.

The square root of 913979 is about 956.0224892752. The cubic root of 913979 is about 97.0462457062.

The spelling of 913979 in words is "nine hundred thirteen thousand, nine hundred seventy-nine".