23390839 has 16 divisors (see below), whose sum is σ = 25420032. Its totient is φ = 21466368.

The previous prime is 23390837. The next prime is 23390863. The reversal of 23390839 is 93809332.

It is a cyclic number.

It is not a de Polignac number, because 23390839 - 2¹ = 23390837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23390798 and 23390807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23390837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66087 + ... + 66439.

It is an arithmetic number, because the mean of its divisors is an integer number (1588752).

Almost surely, 2^23390839 is an apocalyptic number.

23390839 is a deficient number, since it is larger than the sum of its proper divisors (2029193).

23390839 is a wasteful number, since it uses less digits than its factorization.

23390839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 23390839 is about 4836.4076544477. The cubic root of 23390839 is about 285.9885197602.

The spelling of 23390839 in words is "twenty-three million, three hundred ninety thousand, eight hundred thirty-nine".