22788869 has 2 divisors, whose sum is σ = 22788870. Its totient is φ = 22788868.

The previous prime is 22788863. The next prime is 22788943. The reversal of 22788869 is 96888722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22676644 + 112225 = 4762^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 22788869 - 2²⁴ = 6011653 is a prime.

It is a super-2 number, since 2×22788869² = 1038665100598322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22788863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11394434 + 11394435.

It is an arithmetic number, because the mean of its divisors is an integer number (11394435).

Almost surely, 2^22788869 is an apocalyptic number.

It is an amenable number.

22788869 is a deficient number, since it is larger than the sum of its proper divisors (1).

22788869 is an equidigital number, since it uses as much as digits as its factorization.

22788869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The square root of 22788869 is about 4773.7688465195. The cubic root of 22788869 is about 283.5138354643.

The spelling of 22788869 in words is "twenty-two million, seven hundred eighty-eight thousand, eight hundred sixty-nine".