99140 has 12 divisors (see below), whose sum is σ = 208236. Its totient is φ = 39648.

The previous prime is 99139. The next prime is 99149. The reversal of 99140 is 4199.

It can be written as a sum of positive squares in 2 ways, for example, as 61504 + 37636 = 248^2 + 194^2 .

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 99140.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2459 + ... + 2498.

It is an arithmetic number, because the mean of its divisors is an integer number (17353).

2⁹⁹¹⁴⁰ is an apocalyptic number.

It is an amenable number.

99140 is an abundant number, since it is smaller than the sum of its proper divisors (109096).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104118).

99140 is a wasteful number, since it uses less digits than its factorization.

99140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966 (or 4964 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 99140 is about 314.8650504581. The cubic root of 99140 is about 46.2824461878.

The spelling of 99140 in words is "ninety-nine thousand, one hundred forty".