99747871 has 8 divisors (see below), whose sum is σ = 101556000. Its totient is φ = 97945440.

The previous prime is 99747859. The next prime is 99747877. The reversal of 99747871 is 17874799.

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 99747871 - 2⁵ = 99747839 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 (99747877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50205 + ... + 52153.

It is an arithmetic number, because the mean of its divisors is an integer number (12694500).

Almost surely, 2^99747871 is an apocalyptic number.

99747871 is a deficient number, since it is larger than the sum of its proper divisors (1808129).

99747871 is a wasteful number, since it uses less digits than its factorization.

99747871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849.

The product of its digits is 889056, while the sum is 52.

The square root of 99747871 is about 9987.3855938379. The cubic root of 99747871 is about 463.7684620050.

The spelling of 99747871 in words is "ninety-nine million, seven hundred forty-seven thousand, eight hundred seventy-one".