9872890 has 16 divisors (see below), whose sum is σ = 17939232. Its totient is φ = 3911824.

The previous prime is 9872887. The next prime is 9872899. The reversal of 9872890 is 982789.

It is not an unprimeable number, because it can be changed into a prime (9872899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544 + ... + 5683.

It is an arithmetic number, because the mean of its divisors is an integer number (1121202).

Almost surely, 2^9872890 is an apocalyptic number.

9872890 is a deficient number, since it is larger than the sum of its proper divisors (8066342).

9872890 is a wasteful number, since it uses less digits than its factorization.

9872890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9341.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 9872890 is about 3142.1155293846. The cubic root of 9872890 is about 214.5267398016.

The spelling of 9872890 in words is "nine million, eight hundred seventy-two thousand, eight hundred ninety".