122399189 has 8 divisors (see below), whose sum is σ = 133607232. Its totient is φ = 111204640.

The previous prime is 122399177. The next prime is 122399213. The reversal of 122399189 is 981993221.

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 122399189 - 2²⁰ = 121350613 is a prime.

It is a super-2 number, since 2×122399189² = 29963122935715442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122399789) 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, 30017 + ... + 33849.

It is an arithmetic number, because the mean of its divisors is an integer number (16700904).

Almost surely, 2^122399189 is an apocalyptic number.

It is an amenable number.

122399189 is a deficient number, since it is larger than the sum of its proper divisors (11208043).

122399189 is a wasteful number, since it uses less digits than its factorization.

122399189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its digits is 69984, while the sum is 44.

The square root of 122399189 is about 11063.4166964821. The cubic root of 122399189 is about 496.5079195274.

The spelling of 122399189 in words is "one hundred twenty-two million, three hundred ninety-nine thousand, one hundred eighty-nine".