40856686 has 8 divisors (see below), whose sum is σ = 65999304. Its totient is φ = 18856920.

The previous prime is 40856681. The next prime is 40856719. The reversal of 40856686 is 68665804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40856681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785680 + ... + 785731.

It is an arithmetic number, because the mean of its divisors is an integer number (8249913).

Almost surely, 2^40856686 is an apocalyptic number.

40856686 is a deficient number, since it is larger than the sum of its proper divisors (25142618).

40856686 is a wasteful number, since it uses less digits than its factorization.

40856686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571426.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 40856686 is about 6391.9234976648. The cubic root of 40856686 is about 344.4194844287.

The spelling of 40856686 in words is "forty million, eight hundred fifty-six thousand, six hundred eighty-six".