99995870 has 32 divisors (see below), whose sum is σ = 205244928. Its totient is φ = 34748928.

The previous prime is 99995869. The next prime is 99995891. The reversal of 99995870 is 7859999.

It is a Curzon number.

It is a congruent number.

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, 20414 + ... + 24833.

It is an arithmetic number, because the mean of its divisors is an integer number (6413904).

Almost surely, 2^99995870 is an apocalyptic number.

99995870 is an abundant number, since it is smaller than the sum of its proper divisors (105249058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99995870 is a wasteful number, since it uses less digits than its factorization.

99995870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45284.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 99995870 is about 9999.7934978678. The cubic root of 99995870 is about 464.1524933527.

It can be divided in two parts, 999 and 95870, that added together give a palindrome (96869).

The spelling of 99995870 in words is "ninety-nine million, nine hundred ninety-five thousand, eight hundred seventy".