23115839 has 4 divisors (see below), whose sum is σ = 23282280. Its totient is φ = 22949400.

The previous prime is 23115821. The next prime is 23115853. The reversal of 23115839 is 93851132.

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 23115839 - 2¹² = 23111743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115809) 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, 83012 + ... + 83289.

It is an arithmetic number, because the mean of its divisors is an integer number (5820570).

Almost surely, 2^23115839 is an apocalyptic number.

23115839 is a deficient number, since it is larger than the sum of its proper divisors (166441).

23115839 is a wasteful number, since it uses less digits than its factorization.

23115839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166440.

The product of its digits is 6480, while the sum is 32.

The square root of 23115839 is about 4807.8934056404. The cubic root of 23115839 is about 284.8633344960.

The spelling of 23115839 in words is "twenty-three million, one hundred fifteen thousand, eight hundred thirty-nine".