40891134 has 16 divisors (see below), whose sum is σ = 81861120. Its totient is φ = 13617240.

The previous prime is 40891133. The next prime is 40891181. The reversal of 40891134 is 43119804.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40891133) 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 7 ways as a sum of consecutive naturals, for example, 5107 + ... + 10385.

It is an arithmetic number, because the mean of its divisors is an integer number (5116320).

Almost surely, 2^40891134 is an apocalyptic number.

40891134 is an abundant number, since it is smaller than the sum of its proper divisors (40969986).

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

40891134 is a wasteful number, since it uses less digits than its factorization.

40891134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 40891134 is about 6394.6175804343. The cubic root of 40891134 is about 344.5162554480.

The spelling of 40891134 in words is "forty million, eight hundred ninety-one thousand, one hundred thirty-four".