23641139 has 4 divisors (see below), whose sum is σ = 23926056. Its totient is φ = 23356224.

The previous prime is 23641129. The next prime is 23641147. The reversal of 23641139 is 93114632.

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-23641139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23641129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142334 + ... + 142499.

It is an arithmetic number, because the mean of its divisors is an integer number (5981514).

Almost surely, 2^23641139 is an apocalyptic number.

23641139 is a deficient number, since it is larger than the sum of its proper divisors (284917).

23641139 is an equidigital number, since it uses as much as digits as its factorization.

23641139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284916.

The product of its digits is 3888, while the sum is 29.

The square root of 23641139 is about 4862.2154415451. The cubic root of 23641139 is about 287.0050017946.

The spelling of 23641139 in words is "twenty-three million, six hundred forty-one thousand, one hundred thirty-nine".