40856559 has 16 divisors (see below), whose sum is σ = 58226688. Its totient is φ = 25392512.

The previous prime is 40856549. The next prime is 40856591. The reversal of 40856559 is 95565804.

It is a cyclic number.

It is not a de Polignac number, because 40856559 - 2¹¹ = 40854511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40856559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40856549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (3639168).

Almost surely, 2^40856559 is an apocalyptic number.

40856559 is a deficient number, since it is larger than the sum of its proper divisors (17370129).

40856559 is a wasteful number, since it uses less digits than its factorization.

40856559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614.

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 40856559 is about 6391.9135632454. The cubic root of 40856559 is about 344.4191275608.

The spelling of 40856559 in words is "forty million, eight hundred fifty-six thousand, five hundred fifty-nine".