122899879 has 8 divisors (see below), whose sum is σ = 129444480. Its totient is φ = 116455416.

The previous prime is 122899849. The next prime is 122899901. The reversal of 122899879 is 978998221.

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 122899879 - 2¹³ = 122891687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122899849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22509 + ... + 27430.

It is an arithmetic number, because the mean of its divisors is an integer number (16180560).

Almost surely, 2^122899879 is an apocalyptic number.

122899879 is a deficient number, since it is larger than the sum of its proper divisors (6544601).

122899879 is a wasteful number, since it uses less digits than its factorization.

122899879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50069.

The product of its digits is 1306368, while the sum is 55.

The square root of 122899879 is about 11086.0217842110. The cubic root of 122899879 is about 497.1840088278.

The spelling of 122899879 in words is "one hundred twenty-two million, eight hundred ninety-nine thousand, eight hundred seventy-nine".