2398979 has 6 divisors (see below), whose sum is σ = 2622684. Its totient is φ = 2176220.

The previous prime is 2398961. The next prime is 2398987. The reversal of 2398979 is 9798932.

It is not a de Polignac number, because 2398979 - 2²⁰ = 1350403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2398919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4904 + ... + 5370.

It is an arithmetic number, because the mean of its divisors is an integer number (437114).

2^2398979 is an apocalyptic number.

2398979 is a deficient number, since it is larger than the sum of its proper divisors (223705).

2398979 is an frugal number, since it uses more digits than its factorization.

2398979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 478 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 2398979 is about 1548.8637770960. The cubic root of 2398979 is about 133.8676014612.

Subtracting from 2398979 its sum of digits (47), we obtain a palindrome (2398932).

The spelling of 2398979 in words is "two million, three hundred ninety-eight thousand, nine hundred seventy-nine".