14539139 has 4 divisors (see below), whose sum is σ = 14612400. Its totient is φ = 14465880.

The previous prime is 14539127. The next prime is 14539157. The reversal of 14539139 is 93193541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14539139 is a prime.

It is a super-2 number, since 2×14539139² = 422773125722642, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 14539099 and 14539108.

It is not an unprimeable number, because it can be changed into a prime (14539159) 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, 36332 + ... + 36729.

It is an arithmetic number, because the mean of its divisors is an integer number (3653100).

Almost surely, 2^14539139 is an apocalyptic number.

14539139 is a deficient number, since it is larger than the sum of its proper divisors (73261).

14539139 is an equidigital number, since it uses as much as digits as its factorization.

14539139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73260.

The product of its digits is 14580, while the sum is 35.

The square root of 14539139 is about 3813.0222920932. The cubic root of 14539139 is about 244.0691542317.

The spelling of 14539139 in words is "fourteen million, five hundred thirty-nine thousand, one hundred thirty-nine".