99982187 has 4 divisors (see below), whose sum is σ = 101351880. Its totient is φ = 98612496.

The previous prime is 99982133. The next prime is 99982193. The reversal of 99982187 is 78128999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99982187 - 2¹⁰ = 99981163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99984187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684737 + ... + 684882.

It is an arithmetic number, because the mean of its divisors is an integer number (25337970).

Almost surely, 2^99982187 is an apocalyptic number.

99982187 is a deficient number, since it is larger than the sum of its proper divisors (1369693).

99982187 is a wasteful number, since it uses less digits than its factorization.

99982187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369692.

The product of its digits is 653184, while the sum is 53.

The square root of 99982187 is about 9999.1093103336. The cubic root of 99982187 is about 464.1313215174.

The spelling of 99982187 in words is "ninety-nine million, nine hundred eighty-two thousand, one hundred eighty-seven".