23790139 has 4 divisors (see below), whose sum is σ = 24091360. Its totient is φ = 23488920.

The previous prime is 23790133. The next prime is 23790167. The reversal of 23790139 is 93109732.

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

It is a cyclic number.

It is not a de Polignac number, because 23790139 - 2²¹ = 21692987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23790133) 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, 150492 + ... + 150649.

It is an arithmetic number, because the mean of its divisors is an integer number (6022840).

Almost surely, 2^23790139 is an apocalyptic number.

23790139 is a deficient number, since it is larger than the sum of its proper divisors (301221).

23790139 is an equidigital number, since it uses as much as digits as its factorization.

23790139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301220.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 23790139 is about 4877.5136083870. The cubic root of 23790139 is about 287.6066961261.

The spelling of 23790139 in words is "twenty-three million, seven hundred ninety thousand, one hundred thirty-nine".