122866779 has 16 divisors (see below), whose sum is σ = 188172800. Its totient is φ = 69854400.

The previous prime is 122866771. The next prime is 122866819. The reversal of 122866779 is 977668221.

It is not a de Polignac number, because 122866779 - 2³ = 122866771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122866771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10522 + ... + 18879.

It is an arithmetic number, because the mean of its divisors is an integer number (11760800).

Almost surely, 2^122866779 is an apocalyptic number.

122866779 is a deficient number, since it is larger than the sum of its proper divisors (65306021).

122866779 is a wasteful number, since it uses less digits than its factorization.

122866779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29610.

The product of its digits is 508032, while the sum is 48.

The square root of 122866779 is about 11084.5288127191. The cubic root of 122866779 is about 497.1393701391.

The spelling of 122866779 in words is "one hundred twenty-two million, eight hundred sixty-six thousand, seven hundred seventy-nine".