40015983 has 16 divisors (see below), whose sum is σ = 62012160. Its totient is φ = 22478016.

The previous prime is 40015979. The next prime is 40015999. The reversal of 40015983 is 38951004.

40015983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40015983 - 2² = 40015979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40015983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40015903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14910 + ... + 17387.

It is an arithmetic number, because the mean of its divisors is an integer number (3875760).

Almost surely, 2^40015983 is an apocalyptic number.

40015983 is a deficient number, since it is larger than the sum of its proper divisors (21996177).

40015983 is a wasteful number, since it uses less digits than its factorization.

40015983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32366.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 40015983 is about 6325.8187612356. The cubic root of 40015983 is about 342.0407341789.

Adding to 40015983 its reverse (38951004), we get a palindrome (78966987).

The spelling of 40015983 in words is "forty million, fifteen thousand, nine hundred eighty-three".