122290489 has 2 divisors, whose sum is σ = 122290490. Its totient is φ = 122290488.

The previous prime is 122290387. The next prime is 122290523. The reversal of 122290489 is 984092221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93934864 + 28355625 = 9692^2 + 5325^2 .

It is a cyclic number.

It is not a de Polignac number, because 122290489 - 2¹⁵ = 122257721 is a prime.

It is not a weakly prime, because it can be changed into another prime (122290589) 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, 61145244 + 61145245.

It is an arithmetic number, because the mean of its divisors is an integer number (61145245).

Almost surely, 2^122290489 is an apocalyptic number.

It is an amenable number.

122290489 is a deficient number, since it is larger than the sum of its proper divisors (1).

122290489 is an equidigital number, since it uses as much as digits as its factorization.

122290489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 122290489 is about 11058.5030180400. The cubic root of 122290489 is about 496.3608967794.

The spelling of 122290489 in words is "one hundred twenty-two million, two hundred ninety thousand, four hundred eighty-nine".