40186317 has 12 divisors (see below), whose sum is σ = 56920256. Its totient is φ = 25214400.

The previous prime is 40186291. The next prime is 40186327. The reversal of 40186317 is 71368104.

It is a happy number.

40186317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40186317 - 2⁶ = 40186253 is a prime.

It is a super-2 number, since 2×40186317² = 3229880148048978, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40186327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22309 + ... + 24042.

Almost surely, 2^40186317 is an apocalyptic number.

It is an amenable number.

40186317 is a deficient number, since it is larger than the sum of its proper divisors (16733939).

40186317 is a wasteful number, since it uses less digits than its factorization.

40186317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46388 (or 46371 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 40186317 is about 6339.2678599346. The cubic root of 40186317 is about 342.5253629965.

The spelling of 40186317 in words is "forty million, one hundred eighty-six thousand, three hundred seventeen".