13458139 has 4 divisors (see below), whose sum is σ = 13584024. Its totient is φ = 13332256.

The previous prime is 13458113. The next prime is 13458143. The reversal of 13458139 is 93185431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93185431 = 179 ⋅520589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13458139 is a prime.

It is a super-2 number, since 2×13458139² = 362243010686642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13458199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62782 + ... + 62995.

It is an arithmetic number, because the mean of its divisors is an integer number (3396006).

Almost surely, 2^13458139 is an apocalyptic number.

13458139 is a deficient number, since it is larger than the sum of its proper divisors (125885).

13458139 is a wasteful number, since it uses less digits than its factorization.

13458139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125884.

The product of its digits is 12960, while the sum is 34.

The square root of 13458139 is about 3668.5336307577. The cubic root of 13458139 is about 237.8637911387.

The spelling of 13458139 in words is "thirteen million, four hundred fifty-eight thousand, one hundred thirty-nine".