13978759 has 2 divisors, whose sum is σ = 13978760. Its totient is φ = 13978758.

The previous prime is 13978753. The next prime is 13978793. The reversal of 13978759 is 95787931.

13978759 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13978759 - 2³ = 13978751 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13978751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6989379 + 6989380.

It is an arithmetic number, because the mean of its divisors is an integer number (6989380).

Almost surely, 2^13978759 is an apocalyptic number.

13978759 is a deficient number, since it is larger than the sum of its proper divisors (1).

13978759 is an equidigital number, since it uses as much as digits as its factorization.

13978759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 13978759 is about 3738.8178613032. The cubic root of 13978759 is about 240.8922746453.

The spelling of 13978759 in words is "thirteen million, nine hundred seventy-eight thousand, seven hundred fifty-nine".