122392489 has 2 divisors, whose sum is σ = 122392490. Its totient is φ = 122392488.

The previous prime is 122392477. The next prime is 122392493. The reversal of 122392489 is 984293221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108576400 + 13816089 = 10420^2 + 3717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122392489 is a prime.

It is not a weakly prime, because it can be changed into another prime (122392429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61196244 + 61196245.

It is an arithmetic number, because the mean of its divisors is an integer number (61196245).

Almost surely, 2^122392489 is an apocalyptic number.

It is an amenable number.

122392489 is a deficient number, since it is larger than the sum of its proper divisors (1).

122392489 is an equidigital number, since it uses as much as digits as its factorization.

122392489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 122392489 is about 11063.1138925711. The cubic root of 122392489 is about 496.4988599256.

The spelling of 122392489 in words is "one hundred twenty-two million, three hundred ninety-two thousand, four hundred eighty-nine".