9980187 has 16 divisors (see below), whose sum is σ = 16008960. Its totient is φ = 5402592.

The previous prime is 9980177. The next prime is 9980209. The reversal of 9980187 is 7810899.

It is not a de Polignac number, because 9980187 - 2⁶ = 9980123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9980107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12108 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (1000560).

Almost surely, 2^9980187 is an apocalyptic number.

9980187 is a deficient number, since it is larger than the sum of its proper divisors (6028773).

9980187 is a wasteful number, since it uses less digits than its factorization.

9980187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25042.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 9980187 is about 3159.1433965555. The cubic root of 9980187 is about 215.3010888808.

The spelling of 9980187 in words is "nine million, nine hundred eighty thousand, one hundred eighty-seven".