99997995 has 16 divisors (see below), whose sum is σ = 169408800. Its totient is φ = 50194944.

The previous prime is 99997981. The next prime is 99998021. The reversal of 99997995 is 59979999.

It is not a de Polignac number, because 99997995 - 2⁷ = 99997867 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 195820 + ... + 196329.

It is an arithmetic number, because the mean of its divisors is an integer number (10588050).

Almost surely, 2^99997995 is an apocalyptic number.

99997995 is a deficient number, since it is larger than the sum of its proper divisors (69410805).

99997995 is a wasteful number, since it uses less digits than its factorization.

99997995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392174.

The product of its digits is 18600435, while the sum is 66.

The square root of 99997995 is about 9999.8997494975. The cubic root of 99997995 is about 464.1557812120.

The spelling of 99997995 in words is "ninety-nine million, nine hundred ninety-seven thousand, nine hundred ninety-five".