122357889 has 6 divisors (see below), whose sum is σ = 176739186. Its totient is φ = 81571920.

The previous prime is 122357849. The next prime is 122357903. The reversal of 122357889 is 988753221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 112529664 + 9828225 = 10608^2 + 3135^2 .

It is not a de Polignac number, because 122357889 - 2⁹ = 122357377 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122357819) 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, 6797652 + ... + 6797669.

It is an arithmetic number, because the mean of its divisors is an integer number (29456531).

Almost surely, 2^122357889 is an apocalyptic number.

It is an amenable number.

122357889 is a deficient number, since it is larger than the sum of its proper divisors (54381297).

122357889 is a wasteful number, since it uses less digits than its factorization.

122357889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13595327 (or 13595324 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 122357889 is about 11061.5500270080. The cubic root of 122357889 is about 496.4520692558.

The spelling of 122357889 in words is "one hundred twenty-two million, three hundred fifty-seven thousand, eight hundred eighty-nine".