23808139 has 2 divisors, whose sum is σ = 23808140. Its totient is φ = 23808138.

The previous prime is 23808119. The next prime is 23808181. The reversal of 23808139 is 93180832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23808139 - 2¹⁹ = 23283851 is a prime.

It is not a weakly prime, because it can be changed into another prime (23808119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11904069 + 11904070.

It is an arithmetic number, because the mean of its divisors is an integer number (11904070).

Almost surely, 2^23808139 is an apocalyptic number.

23808139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23808139 is an equidigital number, since it uses as much as digits as its factorization.

23808139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 23808139 is about 4879.3584619292. The cubic root of 23808139 is about 287.6792137833.

The spelling of 23808139 in words is "twenty-three million, eight hundred eight thousand, one hundred thirty-nine".