40244539 has 8 divisors (see below), whose sum is σ = 40648608. Its totient is φ = 39842880.

The previous prime is 40244521. The next prime is 40244551. The reversal of 40244539 is 93544204.

It is a happy number.

40244539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40244539 - 2⁵ = 40244507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40244539.

It is not an unprimeable number, because it can be changed into a prime (40244509) 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 7 ways as a sum of consecutive naturals, for example, 54994 + ... + 55720.

It is an arithmetic number, because the mean of its divisors is an integer number (5081076).

Almost surely, 2^40244539 is an apocalyptic number.

40244539 is a deficient number, since it is larger than the sum of its proper divisors (404069).

40244539 is a wasteful number, since it uses less digits than its factorization.

With its successor (40244540) it forms an eRAP, since the sums of their prime factors are consecutive (1205 and 1206).

40244539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 40244539 is about 6343.8583685325. The cubic root of 40244539 is about 342.6907002721.

The spelling of 40244539 in words is "forty million, two hundred forty-four thousand, five hundred thirty-nine".