40085836 has 12 divisors (see below), whose sum is σ = 80171728. Its totient is φ = 17179632.

The previous prime is 40085831. The next prime is 40085887. The reversal of 40085836 is 63858004.

40085836 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40085831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715791 + ... + 715846.

Almost surely, 2^40085836 is an apocalyptic number.

It is an amenable number.

40085836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40085836 is a wasteful number, since it uses less digits than its factorization.

40085836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431648 (or 1431646 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 40085836 is about 6331.3376153859. The cubic root of 40085836 is about 342.2396437193.

The spelling of 40085836 in words is "forty million, eighty-five thousand, eight hundred thirty-six".