122790489 has 4 divisors (see below), whose sum is σ = 163720656. Its totient is φ = 81860324.

The previous prime is 122790469. The next prime is 122790509. The reversal of 122790489 is 984097221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (122790469) and next prime (122790509).

It is a cyclic number.

It is not a de Polignac number, because 122790489 - 2⁸ = 122790233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122790489.

It is not an unprimeable number, because it can be changed into a prime (122790419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20465079 + ... + 20465084.

It is an arithmetic number, because the mean of its divisors is an integer number (40930164).

Almost surely, 2^122790489 is an apocalyptic number.

It is an amenable number.

122790489 is a deficient number, since it is larger than the sum of its proper divisors (40930167).

122790489 is an equidigital number, since it uses as much as digits as its factorization.

122790489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40930166.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 122790489 is about 11081.0869954170. The cubic root of 122790489 is about 497.0364548370.

The spelling of 122790489 in words is "one hundred twenty-two million, seven hundred ninety thousand, four hundred eighty-nine".