23039139 has 4 divisors (see below), whose sum is σ = 30718856. Its totient is φ = 15359424.

The previous prime is 23039119. The next prime is 23039147. The reversal of 23039139 is 93193032.

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

It is not a de Polignac number, because 23039139 - 2⁷ = 23039011 is a prime.

It is a super-2 number, since 2×23039139² = 1061603851722642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23039119) 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, 3839854 + ... + 3839859.

It is an arithmetic number, because the mean of its divisors is an integer number (7679714).

Almost surely, 2^23039139 is an apocalyptic number.

23039139 is a deficient number, since it is larger than the sum of its proper divisors (7679717).

23039139 is an equidigital number, since it uses as much as digits as its factorization.

23039139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679716.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 23039139 is about 4799.9103116621. The cubic root of 23039139 is about 284.5479197721.

The spelling of 23039139 in words is "twenty-three million, thirty-nine thousand, one hundred thirty-nine".