13961291 has 2 divisors, whose sum is σ = 13961292. Its totient is φ = 13961290.

The previous prime is 13961281. The next prime is 13961329. The reversal of 13961291 is 19216931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13961291 - 2¹⁰ = 13960267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13961251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6980645 + 6980646.

It is an arithmetic number, because the mean of its divisors is an integer number (6980646).

Almost surely, 2^13961291 is an apocalyptic number.

13961291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13961291 is an equidigital number, since it uses as much as digits as its factorization.

13961291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 32.

The square root of 13961291 is about 3736.4810985739. The cubic root of 13961291 is about 240.7918923386.

The spelling of 13961291 in words is "thirteen million, nine hundred sixty-one thousand, two hundred ninety-one".