9797172 has 96 divisors (see below), whose sum is σ = 29804544. Its totient is φ = 2428800.

The previous prime is 9797171. The next prime is 9797173. The reversal of 9797172 is 2717979.

It is an interprime number because it is at equal distance from previous prime (9797171) and next prime (9797173).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9797171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21022 + ... + 21482.

It is an arithmetic number, because the mean of its divisors is an integer number (310464).

Almost surely, 2^9797172 is an apocalyptic number.

9797172 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9797172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14902272).

9797172 is an abundant number, since it is smaller than the sum of its proper divisors (20007372).

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

9797172 is a wasteful number, since it uses less digits than its factorization.

9797172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its digits is 55566, while the sum is 42.

The square root of 9797172 is about 3130.0434501776. The cubic root of 9797172 is about 213.9769096116.

The spelling of 9797172 in words is "nine million, seven hundred ninety-seven thousand, one hundred seventy-two".