122826889 has 2 divisors, whose sum is σ = 122826890. Its totient is φ = 122826888.

The previous prime is 122826881. The next prime is 122826901. The reversal of 122826889 is 988628221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101666889 + 21160000 = 10083^2 + 4600^2 .

It is a cyclic number.

It is not a de Polignac number, because 122826889 - 2³ = 122826881 is a prime.

It is a super-2 number, since 2×122826889² = 30172889322836642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122826881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61413444 + 61413445.

It is an arithmetic number, because the mean of its divisors is an integer number (61413445).

Almost surely, 2^122826889 is an apocalyptic number.

It is an amenable number.

122826889 is a deficient number, since it is larger than the sum of its proper divisors (1).

122826889 is an equidigital number, since it uses as much as digits as its factorization.

122826889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 46.

The square root of 122826889 is about 11082.7293118618. The cubic root of 122826889 is about 497.0855637966.

The spelling of 122826889 in words is "one hundred twenty-two million, eight hundred twenty-six thousand, eight hundred eighty-nine".