13940586 has 40 divisors (see below), whose sum is σ = 34081344. Its totient is φ = 4223880.

The previous prime is 13940581. The next prime is 13940587. The reversal of 13940586 is 68504931.

13940586 is a `hidden beast` number, since 1 + 39 + 40 + 586 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13940586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13940581) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2130 + ... + 5693.

Almost surely, 2^13940586 is an apocalyptic number.

13940586 is an abundant number, since it is smaller than the sum of its proper divisors (20140758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13940586 is a wasteful number, since it uses less digits than its factorization.

13940586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848 (or 7839 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 13940586 is about 3733.7094155812. The cubic root of 13940586 is about 240.6727996568.

The spelling of 13940586 in words is "thirteen million, nine hundred forty thousand, five hundred eighty-six".