122898889 has 2 divisors, whose sum is σ = 122898890. Its totient is φ = 122898888.

The previous prime is 122898883. The next prime is 122898929. The reversal of 122898889 is 988898221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95942025 + 26956864 = 9795^2 + 5192^2 .

It is a cyclic number.

It is not a de Polignac number, because 122898889 - 2⁵ = 122898857 is a prime.

It is not a weakly prime, because it can be changed into another prime (122898883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61449444 + 61449445.

It is an arithmetic number, because the mean of its divisors is an integer number (61449445).

Almost surely, 2^122898889 is an apocalyptic number.

It is an amenable number.

122898889 is a deficient number, since it is larger than the sum of its proper divisors (1).

122898889 is an equidigital number, since it uses as much as digits as its factorization.

122898889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 55.

The square root of 122898889 is about 11085.9771332977. The cubic root of 122898889 is about 497.1826738292.

The spelling of 122898889 in words is "one hundred twenty-two million, eight hundred ninety-eight thousand, eight hundred eighty-nine".