13979445 has 32 divisors (see below), whose sum is σ = 23224320. Its totient is φ = 7176000.

The previous prime is 13979417. The next prime is 13979447. The reversal of 13979445 is 54497931.

It is not a de Polignac number, because 13979445 - 2¹⁰ = 13978421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13979397 and 13979406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13979447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55570 + ... + 55820.

It is an arithmetic number, because the mean of its divisors is an integer number (725760).

Almost surely, 2^13979445 is an apocalyptic number.

13979445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13979445 is a deficient number, since it is larger than the sum of its proper divisors (9244875).

13979445 is a wasteful number, since it uses less digits than its factorization.

13979445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its digits is 136080, while the sum is 42.

The square root of 13979445 is about 3738.9096004049. The cubic root of 13979445 is about 240.8962151333.

The spelling of 13979445 in words is "thirteen million, nine hundred seventy-nine thousand, four hundred forty-five".