99891734 has 8 divisors (see below), whose sum is σ = 154671168. Its totient is φ = 48334680.

The previous prime is 99891733. The next prime is 99891739. The reversal of 99891734 is 43719899.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99891733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805517 + ... + 805640.

It is an arithmetic number, because the mean of its divisors is an integer number (19333896).

Almost surely, 2^99891734 is an apocalyptic number.

99891734 is a deficient number, since it is larger than the sum of its proper divisors (54779434).

99891734 is a wasteful number, since it uses less digits than its factorization.

99891734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611190.

The product of its digits is 489888, while the sum is 50.

The square root of 99891734 is about 9994.5852340155. The cubic root of 99891734 is about 463.9913141210.

The spelling of 99891734 in words is "ninety-nine million, eight hundred ninety-one thousand, seven hundred thirty-four".