15914489 has 2 divisors, whose sum is σ = 15914490. Its totient is φ = 15914488.

The previous prime is 15914467. The next prime is 15914513. The reversal of 15914489 is 98441951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14137600 + 1776889 = 3760^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 15914489 - 2⁸ = 15914233 is a prime.

It is a super-2 number, since 2×15914489² = 506541920262242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15914449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7957244 + 7957245.

It is an arithmetic number, because the mean of its divisors is an integer number (7957245).

Almost surely, 2^15914489 is an apocalyptic number.

It is an amenable number.

15914489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15914489 is an equidigital number, since it uses as much as digits as its factorization.

15914489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 41.

The square root of 15914489 is about 3989.2968052026. The cubic root of 15914489 is about 251.5345032614.

The spelling of 15914489 in words is "fifteen million, nine hundred fourteen thousand, four hundred eighty-nine".