99783871 has 8 divisors (see below), whose sum is σ = 108961488. Its totient is φ = 90624000.

The previous prime is 99783847. The next prime is 99783883. The reversal of 99783871 is 17838799.

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

It is a cyclic number.

It is not a de Polignac number, because 99783871 - 2¹⁵ = 99751103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99783811) 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 7 ways as a sum of consecutive naturals, for example, 9151 + ... + 16831.

It is an arithmetic number, because the mean of its divisors is an integer number (13620186).

Almost surely, 2^99783871 is an apocalyptic number.

99783871 is a deficient number, since it is larger than the sum of its proper divisors (9177617).

99783871 is a wasteful number, since it uses less digits than its factorization.

99783871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873.

The product of its digits is 762048, while the sum is 52.

The square root of 99783871 is about 9989.1877047135. The cubic root of 99783871 is about 463.8242481798.

The spelling of 99783871 in words is "ninety-nine million, seven hundred eighty-three thousand, eight hundred seventy-one".