13458979 has 16 divisors (see below), whose sum is σ = 14624064. Its totient is φ = 12355200.

The previous prime is 13458971. The next prime is 13458989. The reversal of 13458979 is 97985431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13458979 - 2³ = 13458971 is a prime.

It is a super-2 number, since 2×13458979² = 362288231444882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13458971) 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 15 ways as a sum of consecutive naturals, for example, 74269 + ... + 74449.

It is an arithmetic number, because the mean of its divisors is an integer number (914004).

Almost surely, 2^13458979 is an apocalyptic number.

13458979 is a deficient number, since it is larger than the sum of its proper divisors (1165085).

13458979 is a wasteful number, since it uses less digits than its factorization.

13458979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its digits is 272160, while the sum is 46.

The square root of 13458979 is about 3668.6481161322. The cubic root of 13458979 is about 237.8687398524.

The spelling of 13458979 in words is "thirteen million, four hundred fifty-eight thousand, nine hundred seventy-nine".