40199 has 4 divisors (see below), whose sum is σ = 40920. Its totient is φ = 39480.

The previous prime is 40193. The next prime is 40213. The reversal of 40199 is 99104.

40199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40193) 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, 269 + ... + 390.

It is an arithmetic number, because the mean of its divisors is an integer number (10230).

2⁴⁰¹⁹⁹ is an apocalyptic number.

40199 is a deficient number, since it is larger than the sum of its proper divisors (721).

40199 is an equidigital number, since it uses as much as digits as its factorization.

40199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

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

The square root of 40199 is about 200.4968827688. The cubic root of 40199 is about 34.2561393438.

The spelling of 40199 in words is "forty thousand, one hundred ninety-nine".