9897876 has 72 divisors (see below), whose sum is σ = 27518400. Its totient is φ = 3100032.

The previous prime is 9897863. The next prime is 9897887. The reversal of 9897876 is 6787989.

It is a super-2 number, since 2×9897876² = 195935898622752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16225 + ... + 16823.

It is an arithmetic number, because the mean of its divisors is an integer number (382200).

Almost surely, 2^9897876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9897876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13759200).

9897876 is an abundant number, since it is smaller than the sum of its proper divisors (17620524).

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

9897876 is a wasteful number, since it uses less digits than its factorization.

9897876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 621 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 9897876 is about 3146.0890006483. The cubic root of 9897876 is about 214.7075598616.

The spelling of 9897876 in words is "nine million, eight hundred ninety-seven thousand, eight hundred seventy-six".