40315799 has 4 divisors (see below), whose sum is σ = 40328640. Its totient is φ = 40302960.

The previous prime is 40315787. The next prime is 40315817. The reversal of 40315799 is 99751304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40315799 - 2⁸ = 40315543 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 (40315999) 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, 1787 + ... + 9155.

It is an arithmetic number, because the mean of its divisors is an integer number (10082160).

Almost surely, 2^40315799 is an apocalyptic number.

40315799 is a deficient number, since it is larger than the sum of its proper divisors (12841).

40315799 is an equidigital number, since it uses as much as digits as its factorization.

40315799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12840.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 40315799 is about 6349.4723402815. The cubic root of 40315799 is about 342.8928456289.

It can be divided in two parts, 40315 and 799, that added together give a palindrome (41114).

The spelling of 40315799 in words is "forty million, three hundred fifteen thousand, seven hundred ninety-nine".