13993291 has 16 divisors (see below), whose sum is σ = 16001440. Its totient is φ = 12130560.

The previous prime is 13993279. The next prime is 13993313. The reversal of 13993291 is 19239931.

13993291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13993291 - 2⁷ = 13993163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13993291.

It is not an unprimeable number, because it can be changed into a prime (13993201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44551 + ... + 44863.

It is an arithmetic number, because the mean of its divisors is an integer number (1000090).

Almost surely, 2^13993291 is an apocalyptic number.

13993291 is a deficient number, since it is larger than the sum of its proper divisors (2008149).

13993291 is a wasteful number, since it uses less digits than its factorization.

13993291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526.

The product of its digits is 13122, while the sum is 37.

The square root of 13993291 is about 3740.7607515050. The cubic root of 13993291 is about 240.9757211127.

The spelling of 13993291 in words is "thirteen million, nine hundred ninety-three thousand, two hundred ninety-one".