13993459 has 2 divisors, whose sum is σ = 13993460. Its totient is φ = 13993458.

The previous prime is 13993439. The next prime is 13993471. The reversal of 13993459 is 95439931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13993459 - 2¹⁵ = 13960691 is a prime.

It is not a weakly prime, because it can be changed into another prime (13993409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6996729 + 6996730.

It is an arithmetic number, because the mean of its divisors is an integer number (6996730).

Almost surely, 2^13993459 is an apocalyptic number.

13993459 is a deficient number, since it is larger than the sum of its proper divisors (1).

13993459 is an equidigital number, since it uses as much as digits as its factorization.

13993459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 43.

The square root of 13993459 is about 3740.7832067630. The cubic root of 13993459 is about 240.9766854738.

The spelling of 13993459 in words is "thirteen million, nine hundred ninety-three thousand, four hundred fifty-nine".