122497989 has 8 divisors (see below), whose sum is σ = 164776512. Its totient is φ = 80942400.

The previous prime is 122497981. The next prime is 122498011. The reversal of 122497989 is 989794221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122497989 - 2³ = 122497981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122497981) 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, 180337 + ... + 181014.

It is an arithmetic number, because the mean of its divisors is an integer number (20597064).

Almost surely, 2^122497989 is an apocalyptic number.

It is an amenable number.

122497989 is a deficient number, since it is larger than the sum of its proper divisors (42278523).

122497989 is a wasteful number, since it uses less digits than its factorization.

122497989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361467.

The product of its digits is 653184, while the sum is 51.

The square root of 122497989 is about 11067.8809624968. The cubic root of 122497989 is about 496.6414764837.

The spelling of 122497989 in words is "one hundred twenty-two million, four hundred ninety-seven thousand, nine hundred eighty-nine".