40799 has 4 divisors (see below), whose sum is σ = 44520. Its totient is φ = 37080.

The previous prime is 40787. The next prime is 40801. The reversal of 40799 is 99704.

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

It is a cyclic number.

It is not a de Polignac number, because 40799 - 2⁸ = 40543 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 (40709) 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, 1844 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (11130).

2⁴⁰⁷⁹⁹ is an apocalyptic number.

40799 is a deficient number, since it is larger than the sum of its proper divisors (3721).

40799 is a wasteful number, since it uses less digits than its factorization.

40799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 40799 is about 201.9876233832. The cubic root of 40799 is about 34.4257311540.

The spelling of 40799 in words is "forty thousand, seven hundred ninety-nine".