23139395 has 4 divisors (see below), whose sum is σ = 27767280. Its totient is φ = 18511512.

The previous prime is 23139379. The next prime is 23139407. The reversal of 23139395 is 59393132.

It is a happy number.

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 23139395 - 2⁴ = 23139379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2313935 + ... + 2313944.

It is an arithmetic number, because the mean of its divisors is an integer number (6941820).

Almost surely, 2^23139395 is an apocalyptic number.

23139395 is a deficient number, since it is larger than the sum of its proper divisors (4627885).

23139395 is an equidigital number, since it uses as much as digits as its factorization.

23139395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627884.

The product of its digits is 21870, while the sum is 35.

The square root of 23139395 is about 4810.3425033983. The cubic root of 23139395 is about 284.9600641693.

The spelling of 23139395 in words is "twenty-three million, one hundred thirty-nine thousand, three hundred ninety-five".