122879329 has 2 divisors, whose sum is σ = 122879330. Its totient is φ = 122879328.

The previous prime is 122879321. The next prime is 122879369. The reversal of 122879329 is 923978221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91776400 + 31102929 = 9580^2 + 5577^2 .

It is an emirp because it is prime and its reverse (923978221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122879329 - 2³ = 122879321 is a prime.

It is not a weakly prime, because it can be changed into another prime (122879321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61439664 + 61439665.

It is an arithmetic number, because the mean of its divisors is an integer number (61439665).

Almost surely, 2^122879329 is an apocalyptic number.

It is an amenable number.

122879329 is a deficient number, since it is larger than the sum of its proper divisors (1).

122879329 is an equidigital number, since it uses as much as digits as its factorization.

122879329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 122879329 is about 11085.0949026159. The cubic root of 122879329 is about 497.1562960234.

The spelling of 122879329 in words is "one hundred twenty-two million, eight hundred seventy-nine thousand, three hundred twenty-nine".