122798789 has 8 divisors (see below), whose sum is σ = 127409760. Its totient is φ = 118212976.

The previous prime is 122798783. The next prime is 122798801. The reversal of 122798789 is 987897221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122798789 - 2⁴ = 122798773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122798789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122798783) 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 7 ways as a sum of consecutive naturals, for example, 3962 + ... + 16164.

It is an arithmetic number, because the mean of its divisors is an integer number (15926220).

Almost surely, 2^122798789 is an apocalyptic number.

It is an amenable number.

122798789 is a deficient number, since it is larger than the sum of its proper divisors (4610971).

122798789 is a wasteful number, since it uses less digits than its factorization.

122798789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579.

The product of its digits is 1016064, while the sum is 53.

The square root of 122798789 is about 11081.4615010837. The cubic root of 122798789 is about 497.0476536132.

The spelling of 122798789 in words is "one hundred twenty-two million, seven hundred ninety-eight thousand, seven hundred eighty-nine".