23228939 has 2 divisors, whose sum is σ = 23228940. Its totient is φ = 23228938.

The previous prime is 23228927. The next prime is 23228969. The reversal of 23228939 is 93982232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23228939 - 2¹² = 23224843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23228969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11614469 + 11614470.

It is an arithmetic number, because the mean of its divisors is an integer number (11614470).

Almost surely, 2^23228939 is an apocalyptic number.

23228939 is a deficient number, since it is larger than the sum of its proper divisors (1).

23228939 is an equidigital number, since it uses as much as digits as its factorization.

23228939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 23228939 is about 4819.6409617315. The cubic root of 23228939 is about 285.3271671169.

The spelling of 23228939 in words is "twenty-three million, two hundred twenty-eight thousand, nine hundred thirty-nine".