9217022940 has 96 divisors (see below), whose sum is σ = 30361988160. Its totient is φ = 2313289728.

The previous prime is 9217022909. The next prime is 9217022959. The reversal of 9217022940 is 492207129.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9217022895 and 9217022904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 492837 + ... + 511196.

It is an arithmetic number, because the mean of its divisors is an integer number (316270710).

Almost surely, 2^9217022940 is an apocalyptic number.

9217022940 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9217022940 is an abundant number, since it is smaller than the sum of its proper divisors (21144965220).

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

9217022940 is a wasteful number, since it uses less digits than its factorization.

9217022940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004068 (or 1004060 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 9217022940 is about 96005.3276646666. The cubic root of 9217022940 is about 2096.6706837126.

The spelling of 9217022940 in words is "nine billion, two hundred seventeen million, twenty-two thousand, nine hundred forty".