40559817 has 4 divisors (see below), whose sum is σ = 54079760. Its totient is φ = 27039876.

The previous prime is 40559801. The next prime is 40559819. The reversal of 40559817 is 71895504.

40559817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40559817 - 2⁴ = 40559801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40559819) 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 3 ways as a sum of consecutive naturals, for example, 6759967 + ... + 6759972.

It is an arithmetic number, because the mean of its divisors is an integer number (13519940).

Almost surely, 2^40559817 is an apocalyptic number.

It is an amenable number.

40559817 is a deficient number, since it is larger than the sum of its proper divisors (13519943).

40559817 is a wasteful number, since it uses less digits than its factorization.

40559817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13519942.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 40559817 is about 6368.6589640206. The cubic root of 40559817 is about 343.5832596514.

The spelling of 40559817 in words is "forty million, five hundred fifty-nine thousand, eight hundred seventeen".