13941391 has 2 divisors, whose sum is σ = 13941392. Its totient is φ = 13941390.

The previous prime is 13941379. The next prime is 13941407. The reversal of 13941391 is 19314931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13941391 - 2¹⁵ = 13908623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13941311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970695 + 6970696.

It is an arithmetic number, because the mean of its divisors is an integer number (6970696).

Almost surely, 2^13941391 is an apocalyptic number.

13941391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13941391 is an equidigital number, since it uses as much as digits as its factorization.

13941391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 31.

The square root of 13941391 is about 3733.8172156655. The cubic root of 13941391 is about 240.6774321229.

The spelling of 13941391 in words is "thirteen million, nine hundred forty-one thousand, three hundred ninety-one".