23985769 has 2 divisors, whose sum is σ = 23985770. Its totient is φ = 23985768.

The previous prime is 23985763. The next prime is 23985781. The reversal of 23985769 is 96758932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22686169 + 1299600 = 4763^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 23985769 - 2⁵ = 23985737 is a prime.

It is a super-2 number, since 2×23985769² = 1150634229042722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23985763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11992884 + 11992885.

It is an arithmetic number, because the mean of its divisors is an integer number (11992885).

Almost surely, 2^23985769 is an apocalyptic number.

It is an amenable number.

23985769 is a deficient number, since it is larger than the sum of its proper divisors (1).

23985769 is an equidigital number, since it uses as much as digits as its factorization.

23985769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 49.

The square root of 23985769 is about 4897.5268248372. The cubic root of 23985769 is about 288.3928898622.

The spelling of 23985769 in words is "twenty-three million, nine hundred eighty-five thousand, seven hundred sixty-nine".