99500091 has 8 divisors (see below), whose sum is σ = 133545984. Its totient is φ = 65893800.

The previous prime is 99500077. The next prime is 99500119. The reversal of 99500091 is 19000599.

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

It is not a de Polignac number, because 99500091 - 2¹⁴ = 99483707 is a prime.

It is a super-3 number, since 3×99500091³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (99500021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109371 + ... + 110276.

It is an arithmetic number, because the mean of its divisors is an integer number (16693248).

Almost surely, 2^99500091 is an apocalyptic number.

99500091 is a deficient number, since it is larger than the sum of its proper divisors (34045893).

99500091 is a wasteful number, since it uses less digits than its factorization.

99500091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219801.

The product of its (nonzero) digits is 3645, while the sum is 33.

The square root of 99500091 is about 9974.9732330468. The cubic root of 99500091 is about 463.3841335648.

The spelling of 99500091 in words is "ninety-nine million, five hundred thousand, ninety-one".