99887843 has 8 divisors (see below), whose sum is σ = 109541376. Its totient is φ = 90329800.

The previous prime is 99887791. The next prime is 99887863. The reversal of 99887843 is 34878899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99887843 - 2⁶ = 99887779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99887863) 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, 21671 + ... + 25872.

It is an arithmetic number, because the mean of its divisors is an integer number (13692672).

Almost surely, 2^99887843 is an apocalyptic number.

99887843 is a deficient number, since it is larger than the sum of its proper divisors (9653533).

99887843 is a wasteful number, since it uses less digits than its factorization.

99887843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47745.

The product of its digits is 3483648, while the sum is 56.

The square root of 99887843 is about 9994.3905767185. The cubic root of 99887843 is about 463.9852895530.

The spelling of 99887843 in words is "ninety-nine million, eight hundred eighty-seven thousand, eight hundred forty-three".