40086864 has 60 divisors (see below), whose sum is σ = 114593856. Its totient is φ = 13075776.

The previous prime is 40086859. The next prime is 40086881. The reversal of 40086864 is 46868004.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 3807 + ... + 9729.

Almost surely, 2^40086864 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 40086864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57296928).

40086864 is an abundant number, since it is smaller than the sum of its proper divisors (74506992).

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

40086864 is a wasteful number, since it uses less digits than its factorization.

40086864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984 (or 5975 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 40086864 is about 6331.4187983421. The cubic root of 40086864 is about 342.2425692693.

The spelling of 40086864 in words is "forty million, eighty-six thousand, eight hundred sixty-four".