23087969 has 2 divisors, whose sum is σ = 23087970. Its totient is φ = 23087968.

The previous prime is 23087959. The next prime is 23088017. The reversal of 23087969 is 96978032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20566225 + 2521744 = 4535^2 + 1588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23087969 is a prime.

It is a super-2 number, since 2×23087969² = 1066108625089922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23087959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11543984 + 11543985.

It is an arithmetic number, because the mean of its divisors is an integer number (11543985).

Almost surely, 2^23087969 is an apocalyptic number.

It is an amenable number.

23087969 is a deficient number, since it is larger than the sum of its proper divisors (1).

23087969 is an equidigital number, since it uses as much as digits as its factorization.

23087969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 23087969 is about 4804.9941727332. The cubic root of 23087969 is about 284.7488050324.

The spelling of 23087969 in words is "twenty-three million, eighty-seven thousand, nine hundred sixty-nine".