99984687 has 16 divisors (see below), whose sum is σ = 146583552. Its totient is φ = 60117120.

The previous prime is 99984679. The next prime is 99984697. The reversal of 99984687 is 78648999.

It is not a de Polignac number, because 99984687 - 2³ = 99984679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99984687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99984607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7738 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (9161472).

Almost surely, 2^99984687 is an apocalyptic number.

99984687 is a deficient number, since it is larger than the sum of its proper divisors (46598865).

99984687 is a wasteful number, since it uses less digits than its factorization.

99984687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23998.

The product of its digits is 7838208, while the sum is 60.

The square root of 99984687 is about 9999.2343206868. The cubic root of 99984687 is about 464.1351899352.

The spelling of 99984687 in words is "ninety-nine million, nine hundred eighty-four thousand, six hundred eighty-seven".