40585916 has 36 divisors (see below), whose sum is σ = 84201768. Its totient is φ = 17061408.

The previous prime is 40585907. The next prime is 40585927. The reversal of 40585916 is 61958504.

It is a self number, because there is not a number n which added to its sum of digits gives 40585916.

It is a congruent number.

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, 8435 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (2338938).

Almost surely, 2^40585916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40585916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42100884).

40585916 is an abundant number, since it is smaller than the sum of its proper divisors (43615852).

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

40585916 is a wasteful number, since it uses less digits than its factorization.

40585916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 40585916 is about 6370.7076530006. The cubic root of 40585916 is about 343.6569389518.

The spelling of 40585916 in words is "forty million, five hundred eighty-five thousand, nine hundred sixteen".