40316985 has 12 divisors (see below), whose sum is σ = 69882852. Its totient is φ = 21502368.

The previous prime is 40316971. The next prime is 40317007. The reversal of 40316985 is 58961304.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 26656569 = 3696^2 + 5163^2 .

It is not a de Polignac number, because 40316985 - 2²¹ = 38219833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 447922 + ... + 448011.

It is an arithmetic number, because the mean of its divisors is an integer number (5823571).

Almost surely, 2^40316985 is an apocalyptic number.

40316985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40316985 is a deficient number, since it is larger than the sum of its proper divisors (29565867).

40316985 is a wasteful number, since it uses less digits than its factorization.

40316985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895944 (or 895941 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 40316985 is about 6349.5657331821. The cubic root of 40316985 is about 342.8962079743.

The spelling of 40316985 in words is "forty million, three hundred sixteen thousand, nine hundred eighty-five".