99727155 has 96 divisors (see below), whose sum is σ = 199600128. Its totient is φ = 45619200.

The previous prime is 99727141. The next prime is 99727157. The reversal of 99727155 is 55172799.

It is not a de Polignac number, because 99727155 - 2⁸ = 99726899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99727155.

It is not an unprimeable number, because it can be changed into a prime (99727157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1028067 + ... + 1028163.

It is an arithmetic number, because the mean of its divisors is an integer number (2079168).

Almost surely, 2^99727155 is an apocalyptic number.

99727155 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

99727155 is a wasteful number, since it uses less digits than its factorization.

99727155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 214 counting only the distinct ones).

The product of its digits is 198450, while the sum is 45.

The square root of 99727155 is about 9986.3484317342. The cubic root of 99727155 is about 463.7363540762.

The spelling of 99727155 in words is "ninety-nine million, seven hundred twenty-seven thousand, one hundred fifty-five".