99145 has 8 divisors (see below), whose sum is σ = 120960. Its totient is φ = 78000.

The previous prime is 99139. The next prime is 99149. The reversal of 99145 is 54199.

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

It is not a de Polignac number, because 99145 - 2³ = 99137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270 + ... + 520.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁹⁹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

99145 is a deficient number, since it is larger than the sum of its proper divisors (21815).

99145 is a wasteful number, since it uses less digits than its factorization.

99145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its digits is 1620, while the sum is 28.

The square root of 99145 is about 314.8729902675. The cubic root of 99145 is about 46.2832242402.

The spelling of 99145 in words is "ninety-nine thousand, one hundred forty-five".