9091197 has 10 divisors (see below), whose sum is σ = 13580798. Its totient is φ = 6060744.

The previous prime is 9091157. The next prime is 9091207. The reversal of 9091197 is 7911909.

It can be written as a sum of positive squares in only one way, i.e., 6859161 + 2232036 = 2619^2 + 1494^2 .

It is not a de Polignac number, because 9091197 - 2¹⁰ = 9090173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091127) 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 9 ways as a sum of consecutive naturals, for example, 56038 + ... + 56199.

Almost surely, 2^9091197 is an apocalyptic number.

It is an amenable number.

9091197 is a deficient number, since it is larger than the sum of its proper divisors (4489601).

9091197 is a wasteful number, since it uses less digits than its factorization.

9091197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112249 (or 112240 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 9091197 is about 3015.1611897210. The cubic root of 9091197 is about 208.7086054630.

The spelling of 9091197 in words is "nine million, ninety-one thousand, one hundred ninety-seven".