122338789 has 2 divisors, whose sum is σ = 122338790. Its totient is φ = 122338788.

The previous prime is 122338757. The next prime is 122338807. The reversal of 122338789 is 987833221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99700225 + 22638564 = 9985^2 + 4758^2 .

It is an emirp because it is prime and its reverse (987833221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122338789 - 2⁵ = 122338757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122338709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61169394 + 61169395.

It is an arithmetic number, because the mean of its divisors is an integer number (61169395).

Almost surely, 2^122338789 is an apocalyptic number.

It is an amenable number.

122338789 is a deficient number, since it is larger than the sum of its proper divisors (1).

122338789 is an equidigital number, since it uses as much as digits as its factorization.

122338789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 122338789 is about 11060.6866423383. The cubic root of 122338789 is about 496.4262359454.

The spelling of 122338789 in words is "one hundred twenty-two million, three hundred thirty-eight thousand, seven hundred eighty-nine".