13943291 has 2 divisors, whose sum is σ = 13943292. Its totient is φ = 13943290.

The previous prime is 13943243. The next prime is 13943299. The reversal of 13943291 is 19234931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13943291 - 2⁶ = 13943227 is a prime.

It is not a weakly prime, because it can be changed into another prime (13943299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971645 + 6971646.

It is an arithmetic number, because the mean of its divisors is an integer number (6971646).

Almost surely, 2^13943291 is an apocalyptic number.

13943291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13943291 is an equidigital number, since it uses as much as digits as its factorization.

13943291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 13943291 is about 3734.0716383058. The cubic root of 13943291 is about 240.6883651866.

The spelling of 13943291 in words is "thirteen million, nine hundred forty-three thousand, two hundred ninety-one".