13458889 has 2 divisors, whose sum is σ = 13458890. Its totient is φ = 13458888.

The previous prime is 13458853. The next prime is 13458899. The reversal of 13458889 is 98885431.

13458889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7333264 + 6125625 = 2708^2 + 2475^2 .

It is an emirp because it is prime and its reverse (98885431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13458889 - 2⁷ = 13458761 is a prime.

It is a super-2 number, since 2×13458889² = 362283386228642, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (13458829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6729444 + 6729445.

It is an arithmetic number, because the mean of its divisors is an integer number (6729445).

Almost surely, 2^13458889 is an apocalyptic number.

It is an amenable number.

13458889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13458889 is an equidigital number, since it uses as much as digits as its factorization.

13458889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 46.

The square root of 13458889 is about 3668.6358500129. The cubic root of 13458889 is about 237.8682096429.

The spelling of 13458889 in words is "thirteen million, four hundred fifty-eight thousand, eight hundred eighty-nine".