122589091 has 16 divisors (see below), whose sum is σ = 132257664. Its totient is φ = 113215104.

The previous prime is 122589073. The next prime is 122589109. The reversal of 122589091 is 190985221.

It is an interprime number because it is at equal distance from previous prime (122589073) and next prime (122589109).

It is not a de Polignac number, because 122589091 - 2¹⁵ = 122556323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122589091.

It is not an unprimeable number, because it can be changed into a prime (122583091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399160 + ... + 399466.

It is an arithmetic number, because the mean of its divisors is an integer number (8266104).

Almost surely, 2^122589091 is an apocalyptic number.

122589091 is a deficient number, since it is larger than the sum of its proper divisors (9668573).

122589091 is a wasteful number, since it uses less digits than its factorization.

122589091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 122589091 is about 11071.9958002160. The cubic root of 122589091 is about 496.7645637292.

The spelling of 122589091 in words is "one hundred twenty-two million, five hundred eighty-nine thousand, ninety-one".