23809963 has 2 divisors, whose sum is σ = 23809964. Its totient is φ = 23809962.

The previous prime is 23809949. The next prime is 23809967. The reversal of 23809963 is 36990832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23809963 - 2⁵ = 23809931 is a prime.

It is a super-2 number, since 2×23809963² = 1133828676122738, which contains 22 as substring.

It is equal to p_1495939 and since 23809963 and 1495939 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23809967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11904981 + 11904982.

It is an arithmetic number, because the mean of its divisors is an integer number (11904982).

Almost surely, 2^23809963 is an apocalyptic number.

23809963 is a deficient number, since it is larger than the sum of its proper divisors (1).

23809963 is an equidigital number, since it uses as much as digits as its factorization.

23809963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 23809963 is about 4879.5453681670. The cubic root of 23809963 is about 287.6865601994.

The spelling of 23809963 in words is "twenty-three million, eight hundred nine thousand, nine hundred sixty-three".