23923819 has 2 divisors, whose sum is σ = 23923820. Its totient is φ = 23923818.

The previous prime is 23923759. The next prime is 23923843. The reversal of 23923819 is 91832932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23923819 - 2⁹ = 23923307 is a prime.

It is a super-2 number, since 2×23923819² = 1144698231089522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23923019) 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 as a sum of consecutive naturals, namely, 11961909 + 11961910.

It is an arithmetic number, because the mean of its divisors is an integer number (11961910).

Almost surely, 2^23923819 is an apocalyptic number.

23923819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23923819 is an equidigital number, since it uses as much as digits as its factorization.

23923819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 23923819 is about 4891.1981149816. The cubic root of 23923819 is about 288.1443905277.

It can be divided in two parts, 23923 and 819, that added together give a palindrome (24742).

The spelling of 23923819 in words is "twenty-three million, nine hundred twenty-three thousand, eight hundred nineteen".