99171711 has 12 divisors (see below), whose sum is σ = 143610480. Its totient is φ = 65947200.

The previous prime is 99171707. The next prime is 99171713. The reversal of 99171711 is 11717199.

It is not a de Polignac number, because 99171711 - 2² = 99171707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99171713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10131 + ... + 17348.

It is an arithmetic number, because the mean of its divisors is an integer number (11967540).

Almost surely, 2^99171711 is an apocalyptic number.

99171711 is a deficient number, since it is larger than the sum of its proper divisors (44438769).

99171711 is a wasteful number, since it uses less digits than its factorization.

99171711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27886 (or 27883 counting only the distinct ones).

The product of its digits is 3969, while the sum is 36.

The square root of 99171711 is about 9958.4994351559. The cubic root of 99171711 is about 462.8738030861.

It can be divided in two parts, 9917 and 1711, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 99171711 in words is "ninety-nine million, one hundred seventy-one thousand, seven hundred eleven".