40891854 has 16 divisors (see below), whose sum is σ = 82373760. Its totient is φ = 13532280.

The previous prime is 40891849. The next prime is 40891867. The reversal of 40891854 is 45819804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23682 + ... + 25349.

It is an arithmetic number, because the mean of its divisors is an integer number (5148360).

Almost surely, 2^40891854 is an apocalyptic number.

40891854 is an abundant number, since it is smaller than the sum of its proper divisors (41481906).

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

40891854 is a wasteful number, since it uses less digits than its factorization.

40891854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49175.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 40891854 is about 6394.6738775328. The cubic root of 40891854 is about 344.5182774858.

The spelling of 40891854 in words is "forty million, eight hundred ninety-one thousand, eight hundred fifty-four".