13981459 has 2 divisors, whose sum is σ = 13981460. Its totient is φ = 13981458.

The previous prime is 13981441. The next prime is 13981469. The reversal of 13981459 is 95418931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13981459 - 2⁵ = 13981427 is a prime.

It is not a weakly prime, because it can be changed into another prime (13981469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6990729 + 6990730.

It is an arithmetic number, because the mean of its divisors is an integer number (6990730).

Almost surely, 2^13981459 is an apocalyptic number.

13981459 is a deficient number, since it is larger than the sum of its proper divisors (1).

13981459 is an equidigital number, since it uses as much as digits as its factorization.

13981459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 13981459 is about 3739.1789205653. The cubic root of 13981459 is about 240.9077831099.

The spelling of 13981459 in words is "thirteen million, nine hundred eighty-one thousand, four hundred fifty-nine".