99845 has 8 divisors (see below), whose sum is σ = 126240. Its totient is φ = 75600.

The previous prime is 99839. The next prime is 99859. The reversal of 99845 is 54899.

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

It is not a de Polignac number, because 99845 - 2⁴ = 99829 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99845.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431 + ... + 620.

It is an arithmetic number, because the mean of its divisors is an integer number (15780).

2⁹⁹⁸⁴⁵ is an apocalyptic number.

99845 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

99845 is a deficient number, since it is larger than the sum of its proper divisors (26395).

99845 is a wasteful number, since it uses less digits than its factorization.

99845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its digits is 12960, while the sum is 35.

The square root of 99845 is about 315.9825944574. The cubic root of 99845 is about 46.3918943927.

The spelling of 99845 in words is "ninety-nine thousand, eight hundred forty-five".