13489873 has 2 divisors, whose sum is σ = 13489874. Its totient is φ = 13489872.

The previous prime is 13489849. The next prime is 13489909. The reversal of 13489873 is 37898431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12552849 + 937024 = 3543^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 13489873 - 2⁵ = 13489841 is a prime.

It is a super-2 number, since 2×13489873² = 363953347112258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13481873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6744936 + 6744937.

It is an arithmetic number, because the mean of its divisors is an integer number (6744937).

Almost surely, 2^13489873 is an apocalyptic number.

It is an amenable number.

13489873 is a deficient number, since it is larger than the sum of its proper divisors (1).

13489873 is an equidigital number, since it uses as much as digits as its factorization.

13489873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 13489873 is about 3672.8562454852. The cubic root of 13489873 is about 238.0506036033.

The spelling of 13489873 in words is "thirteen million, four hundred eighty-nine thousand, eight hundred seventy-three".