909238122 has 160 divisors (see below), whose sum is σ = 2387320320. Its totient is φ = 256141440.

The previous prime is 909238117. The next prime is 909238129. The reversal of 909238122 is 221832909.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (909238129) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1240068 + ... + 1240800.

It is an arithmetic number, because the mean of its divisors is an integer number (14920752).

Almost surely, 2^909238122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 909238122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1193660160).

909238122 is an abundant number, since it is smaller than the sum of its proper divisors (1478082198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

909238122 is a wasteful number, since it uses less digits than its factorization.

909238122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 909238122 is about 30153.5756088727. The cubic root of 909238122 is about 968.7815934643.

The spelling of 909238122 in words is "nine hundred nine million, two hundred thirty-eight thousand, one hundred twenty-two".