13979858 has 32 divisors (see below), whose sum is σ = 23183040. Its totient is φ = 6298560.

The previous prime is 13979857. The next prime is 13979921. The reversal of 13979858 is 85897931.

It is not an unprimeable number, because it can be changed into a prime (13979851) 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 15 ways as a sum of consecutive naturals, for example, 85685 + ... + 85847.

It is an arithmetic number, because the mean of its divisors is an integer number (724470).

Almost surely, 2^13979858 is an apocalyptic number.

13979858 is a deficient number, since it is larger than the sum of its proper divisors (9203182).

13979858 is a wasteful number, since it uses less digits than its factorization.

13979858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282.

The product of its digits is 544320, while the sum is 50.

The square root of 13979858 is about 3738.9648300031. The cubic root of 13979858 is about 240.8985874057.

It can be divided in two parts, 139 and 79858, that added together give a palindrome (79997).

The spelling of 13979858 in words is "thirteen million, nine hundred seventy-nine thousand, eight hundred fifty-eight".