40866384 has 80 divisors (see below), whose sum is σ = 115270400. Its totient is φ = 12400128.

The previous prime is 40866323. The next prime is 40866407. The reversal of 40866384 is 48366804.

It is a super-3 number, since 3×40866384³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48882 + ... + 49710.

It is an arithmetic number, because the mean of its divisors is an integer number (1440880).

Almost surely, 2^40866384 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 40866384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57635200).

40866384 is an abundant number, since it is smaller than the sum of its proper divisors (74404016).

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

40866384 is a wasteful number, since it uses less digits than its factorization.

40866384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 40866384 is about 6392.6820662379. The cubic root of 40866384 is about 344.4467334646.

The spelling of 40866384 in words is "forty million, eight hundred sixty-six thousand, three hundred eighty-four".