99105091 has 8 divisors (see below), whose sum is σ = 103832064. Its totient is φ = 94413000.

The previous prime is 99105079. The next prime is 99105101. The reversal of 99105091 is 19050199.

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 99105091 - 2⁵ = 99105059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99105001) 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, 2811 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (12979008).

Almost surely, 2^99105091 is an apocalyptic number.

99105091 is a deficient number, since it is larger than the sum of its proper divisors (4726973).

99105091 is a wasteful number, since it uses less digits than its factorization.

99105091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17441.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 99105091 is about 9955.1539917773. The cubic root of 99105091 is about 462.7701325265.

The spelling of 99105091 in words is "ninety-nine million, one hundred five thousand, ninety-one".