22887294889 has 2 divisors, whose sum is σ = 22887294890. Its totient is φ = 22887294888.

The previous prime is 22887294817. The next prime is 22887294893. The reversal of 22887294889 is 98849278822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11628387225 + 11258907664 = 107835^2 + 106108^2 .

It is a cyclic number.

It is not a de Polignac number, because 22887294889 - 2¹⁹ = 22886770601 is a prime.

It is not a weakly prime, because it can be changed into another prime (22887297889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11443647444 + 11443647445.

It is an arithmetic number, because the mean of its divisors is an integer number (11443647445).

Almost surely, 2^22887294889 is an apocalyptic number.

It is an amenable number.

22887294889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22887294889 is an equidigital number, since it uses as much as digits as its factorization.

22887294889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74317824, while the sum is 67.

It can be divided in two parts, 228872 and 94889, that added together give a square (323761 = 569²).

The spelling of 22887294889 in words is "twenty-two billion, eight hundred eighty-seven million, two hundred ninety-four thousand, eight hundred eighty-nine".