40085585 has 4 divisors (see below), whose sum is σ = 48102708. Its totient is φ = 32068464.

The previous prime is 40085567. The next prime is 40085651. The reversal of 40085585 is 58558004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26306641 + 13778944 = 5129^2 + 3712^2 .

It is a cyclic number.

It is not a de Polignac number, because 40085585 - 2⁸ = 40085329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4008554 + ... + 4008563.

It is an arithmetic number, because the mean of its divisors is an integer number (12025677).

Almost surely, 2^40085585 is an apocalyptic number.

It is an amenable number.

40085585 is a deficient number, since it is larger than the sum of its proper divisors (8017123).

40085585 is an equidigital number, since it uses as much as digits as its factorization.

40085585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017122.

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 40085585 is about 6331.3177933192. The cubic root of 40085585 is about 342.2389293995.

The spelling of 40085585 in words is "forty million, eighty-five thousand, five hundred eighty-five".