9897273 has 12 divisors (see below), whose sum is σ = 14566500. Its totient is φ = 6473376.

The previous prime is 9897263. The next prime is 9897287. The reversal of 9897273 is 3727989.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 6827769 = 1752^2 + 2613^2 .

It is not a de Polignac number, because 9897273 - 2⁴ = 9897257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9897203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9898 + ... + 10851.

It is an arithmetic number, because the mean of its divisors is an integer number (1213875).

Almost surely, 2^9897273 is an apocalyptic number.

It is an amenable number.

9897273 is a deficient number, since it is larger than the sum of its proper divisors (4669227).

9897273 is a wasteful number, since it uses less digits than its factorization.

9897273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20808 (or 20805 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 9897273 is about 3145.9931659176. The cubic root of 9897273 is about 214.7031996236.

The spelling of 9897273 in words is "nine million, eight hundred ninety-seven thousand, two hundred seventy-three".