122159889 has 6 divisors (see below), whose sum is σ = 176453186. Its totient is φ = 81439920.

The previous prime is 122159839. The next prime is 122159899. The reversal of 122159889 is 988951221.

It can be written as a sum of positive squares in only one way, i.e., 119574225 + 2585664 = 10935^2 + 1608^2 .

It is not a de Polignac number, because 122159889 - 2⁷ = 122159761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122159839) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6786652 + ... + 6786669.

Almost surely, 2^122159889 is an apocalyptic number.

It is an amenable number.

122159889 is a deficient number, since it is larger than the sum of its proper divisors (54293297).

122159889 is a wasteful number, since it uses less digits than its factorization.

122159889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13573327 (or 13573324 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 122159889 is about 11052.5964822751. The cubic root of 122159889 is about 496.1841378075.

The spelling of 122159889 in words is "one hundred twenty-two million, one hundred fifty-nine thousand, eight hundred eighty-nine".