983979 has 6 divisors (see below), whose sum is σ = 1421316. Its totient is φ = 655980.

The previous prime is 983951. The next prime is 983987. The reversal of 983979 is 979389.

It is a happy number.

It is not a de Polignac number, because 983979 - 2¹² = 979883 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 983979.

It is not an unprimeable number, because it can be changed into a prime (983929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54657 + ... + 54674.

It is an arithmetic number, because the mean of its divisors is an integer number (236886).

2⁹⁸³⁹⁷⁹ is an apocalyptic number.

983979 is a deficient number, since it is larger than the sum of its proper divisors (437337).

983979 is a wasteful number, since it uses less digits than its factorization.

983979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109337 (or 109334 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 983979 is about 991.9571563329. The cubic root of 983979 is about 99.4630890927.

The spelling of 983979 in words is "nine hundred eighty-three thousand, nine hundred seventy-nine".