9172270844 has 24 divisors (see below), whose sum is σ = 17983964208. Its totient is φ = 4056531840.

The previous prime is 9172270841. The next prime is 9172270873. The reversal of 9172270844 is 4480722719.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 9172270795 and 9172270804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172270841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815409 + ... + 2818664.

It is an arithmetic number, because the mean of its divisors is an integer number (749331842).

Almost surely, 2^9172270844 is an apocalyptic number.

It is an amenable number.

9172270844 is a deficient number, since it is larger than the sum of its proper divisors (8811693364).

9172270844 is a wasteful number, since it uses less digits than its factorization.

9172270844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634125 (or 5634123 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 9172270844 is about 95771.9731654308. The cubic root of 9172270844 is about 2093.2718031892.

The spelling of 9172270844 in words is "nine billion, one hundred seventy-two million, two hundred seventy thousand, eight hundred forty-four".