40891086 has 24 divisors (see below), whose sum is σ = 93809664. Its totient is φ = 12828480.

The previous prime is 40891057. The next prime is 40891091. The reversal of 40891086 is 68019804.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40891086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66510 + ... + 67121.

It is an arithmetic number, because the mean of its divisors is an integer number (3908736).

Almost surely, 2^40891086 is an apocalyptic number.

40891086 is an abundant number, since it is smaller than the sum of its proper divisors (52918578).

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

40891086 is a wasteful number, since it uses less digits than its factorization.

40891086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133656 (or 133653 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 40891086 is about 6394.6138272768. The cubic root of 40891086 is about 344.5161206447.

The spelling of 40891086 in words is "forty million, eight hundred ninety-one thousand, eighty-six".