40899 has 4 divisors (see below), whose sum is σ = 54536. Its totient is φ = 27264.

The previous prime is 40897. The next prime is 40903. The reversal of 40899 is 99804.

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

It is not a de Polignac number, because 40899 - 2¹ = 40897 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40899.

It is not an unprimeable number, because it can be changed into a prime (40897) 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, 6814 + ... + 6819.

It is an arithmetic number, because the mean of its divisors is an integer number (13634).

2⁴⁰⁸⁹⁹ is an apocalyptic number.

40899 is a deficient number, since it is larger than the sum of its proper divisors (13637).

40899 is a wasteful number, since it uses less digits than its factorization.

40899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13636.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 40899 is about 202.2350118056. The cubic root of 40899 is about 34.4538344924.

It can be divided in two parts, 40 and 899, that added together give a palindrome (939).

The spelling of 40899 in words is "forty thousand, eight hundred ninety-nine".