122887879 has 2 divisors, whose sum is σ = 122887880. Its totient is φ = 122887878.

The previous prime is 122887859. The next prime is 122887889. The reversal of 122887879 is 978788221.

It is a strong prime.

It is an emirp because it is prime and its reverse (978788221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122887879 - 2⁵ = 122887847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122887829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61443939 + 61443940.

It is an arithmetic number, because the mean of its divisors is an integer number (61443940).

Almost surely, 2^122887879 is an apocalyptic number.

122887879 is a deficient number, since it is larger than the sum of its proper divisors (1).

122887879 is an equidigital number, since it uses as much as digits as its factorization.

122887879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 52.

The square root of 122887879 is about 11085.4805488982. The cubic root of 122887879 is about 497.1678265436.

The spelling of 122887879 in words is "one hundred twenty-two million, eight hundred eighty-seven thousand, eight hundred seventy-nine".