23771969 has 12 divisors (see below), whose sum is σ = 26017236. Its totient is φ = 21591648.

The previous prime is 23771927. The next prime is 23771977. The reversal of 23771969 is 96917732.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13786369 + 9985600 = 3713^2 + 3160^2 .

It is not a de Polignac number, because 23771969 - 2¹² = 23767873 is a prime.

It is a super-2 number, since 2×23771969² = 1130213020273922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23771269) 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 in 11 ways as a sum of consecutive naturals, for example, 80987 + ... + 81279.

It is an arithmetic number, because the mean of its divisors is an integer number (2168103).

Almost surely, 2^23771969 is an apocalyptic number.

It is an amenable number.

23771969 is a deficient number, since it is larger than the sum of its proper divisors (2245267).

23771969 is an equidigital number, since it uses as much as digits as its factorization.

23771969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 385 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 23771969 is about 4875.6506232502. The cubic root of 23771969 is about 287.5334564720.

The spelling of 23771969 in words is "twenty-three million, seven hundred seventy-one thousand, nine hundred sixty-nine".