13974779 has 12 divisors (see below), whose sum is σ = 17295696. Its totient is φ = 11056032.

The previous prime is 13974761. The next prime is 13974803. The reversal of 13974779 is 97747931.

It is not a de Polignac number, because 13974779 - 2⁸ = 13974523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13974739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4724 + ... + 7089.

It is an arithmetic number, because the mean of its divisors is an integer number (1441308).

Almost surely, 2^13974779 is an apocalyptic number.

13974779 is a deficient number, since it is larger than the sum of its proper divisors (3320917).

13974779 is a wasteful number, since it uses less digits than its factorization.

13974779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846 (or 11833 counting only the distinct ones).

The product of its digits is 333396, while the sum is 47.

The square root of 13974779 is about 3738.2855696161. The cubic root of 13974779 is about 240.8694103777.

The spelling of 13974779 in words is "thirteen million, nine hundred seventy-four thousand, seven hundred seventy-nine".