40309886 has 8 divisors (see below), whose sum is σ = 60496200. Its totient is φ = 20144488.

The previous prime is 40309883. The next prime is 40309891. The reversal of 40309886 is 68890304.

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 (40309883) 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, 1145 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (7562025).

Almost surely, 2^40309886 is an apocalyptic number.

40309886 is a deficient number, since it is larger than the sum of its proper divisors (20186314).

40309886 is a wasteful number, since it uses less digits than its factorization.

40309886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 40309886 is about 6349.0066939640. The cubic root of 40309886 is about 342.8760811133.

The spelling of 40309886 in words is "forty million, three hundred nine thousand, eight hundred eighty-six".