9902775 has 36 divisors (see below), whose sum is σ = 17064632. Its totient is φ = 5066880.

The previous prime is 9902749. The next prime is 9902797. The reversal of 9902775 is 5772099.

9902775 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 9902775 - 2¹⁰ = 9901751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62997 + ... + 63153.

Almost surely, 2^9902775 is an apocalyptic number.

9902775 is a deficient number, since it is larger than the sum of its proper divisors (7161857).

9902775 is a wasteful number, since it uses less digits than its factorization.

9902775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 9902775 is about 3146.8674900606. The cubic root of 9902775 is about 214.7429775224.

The spelling of 9902775 in words is "nine million, nine hundred two thousand, seven hundred seventy-five".