23889869 has 2 divisors, whose sum is σ = 23889870. Its totient is φ = 23889868.

The previous prime is 23889841. The next prime is 23889883. The reversal of 23889869 is 96898832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17960644 + 5929225 = 4238^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 23889869 - 2¹² = 23885773 is a prime.

It is a super-2 number, since 2×23889869² = 1141451681674322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23889869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23889829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11944934 + 11944935.

It is an arithmetic number, because the mean of its divisors is an integer number (11944935).

Almost surely, 2^23889869 is an apocalyptic number.

It is an amenable number.

23889869 is a deficient number, since it is larger than the sum of its proper divisors (1).

23889869 is an equidigital number, since it uses as much as digits as its factorization.

23889869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 53.

The square root of 23889869 is about 4887.7263630445. The cubic root of 23889869 is about 288.0080252715.

The spelling of 23889869 in words is "twenty-three million, eight hundred eighty-nine thousand, eight hundred sixty-nine".