122238689 has 2 divisors, whose sum is σ = 122238690. Its totient is φ = 122238688.

The previous prime is 122238679. The next prime is 122238703. The reversal of 122238689 is 986832221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112678225 + 9560464 = 10615^2 + 3092^2 .

It is a cyclic number.

It is not a de Polignac number, because 122238689 - 2⁸ = 122238433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122238659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61119344 + 61119345.

It is an arithmetic number, because the mean of its divisors is an integer number (61119345).

Almost surely, 2^122238689 is an apocalyptic number.

It is an amenable number.

122238689 is a deficient number, since it is larger than the sum of its proper divisors (1).

122238689 is an equidigital number, since it uses as much as digits as its factorization.

122238689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 122238689 is about 11056.1606808150. The cubic root of 122238689 is about 496.2908037688.

The spelling of 122238689 in words is "one hundred twenty-two million, two hundred thirty-eight thousand, six hundred eighty-nine".