23290139 has 8 divisors (see below), whose sum is σ = 23833920. Its totient is φ = 22752576.

The previous prime is 23290129. The next prime is 23290147. The reversal of 23290139 is 93109232.

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

It is a cyclic number.

It is not a de Polignac number, because 23290139 - 2¹⁶ = 23224603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23290129) 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, 6494 + ... + 9420.

It is an arithmetic number, because the mean of its divisors is an integer number (2979240).

Almost surely, 2^23290139 is an apocalyptic number.

23290139 is a deficient number, since it is larger than the sum of its proper divisors (543781).

23290139 is a wasteful number, since it uses less digits than its factorization.

23290139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 23290139 is about 4825.9858060297. The cubic root of 23290139 is about 285.5775259420.

The spelling of 23290139 in words is "twenty-three million, two hundred ninety thousand, one hundred thirty-nine".