9890575 has 24 divisors (see below), whose sum is σ = 12999168. Its totient is φ = 7450080.

The previous prime is 9890527. The next prime is 9890579. The reversal of 9890575 is 5750989.

It is a de Polignac number, because none of the positive numbers 2^k-9890575 is a prime.

It is a Duffinian number.

9890575 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59142 + ... + 59308.

It is an arithmetic number, because the mean of its divisors is an integer number (541632).

Almost surely, 2^9890575 is an apocalyptic number.

9890575 is a deficient number, since it is larger than the sum of its proper divisors (3108593).

9890575 is a wasteful number, since it uses less digits than its factorization.

9890575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 9890575 is about 3144.9284570559. The cubic root of 9890575 is about 214.6547550819.

The spelling of 9890575 in words is "nine million, eight hundred ninety thousand, five hundred seventy-five".