23455139 has 8 divisors (see below), whose sum is σ = 24737040. Its totient is φ = 22178016.

The previous prime is 23455123. The next prime is 23455141. The reversal of 23455139 is 93155432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23455139 - 2⁴ = 23455123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23455109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13889 + ... + 15485.

It is an arithmetic number, because the mean of its divisors is an integer number (3092130).

Almost surely, 2^23455139 is an apocalyptic number.

23455139 is a deficient number, since it is larger than the sum of its proper divisors (1281901).

23455139 is a wasteful number, since it uses less digits than its factorization.

23455139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389.

The product of its digits is 16200, while the sum is 32.

The square root of 23455139 is about 4843.0505882140. The cubic root of 23455139 is about 286.2503350428.

The spelling of 23455139 in words is "twenty-three million, four hundred fifty-five thousand, one hundred thirty-nine".