40117687 has 8 divisors (see below), whose sum is σ = 40890240. Its totient is φ = 39348960.

The previous prime is 40117663. The next prime is 40117697. The reversal of 40117687 is 78671104.

40117687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40117687 - 2¹⁹ = 39593399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40117697) 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 7 ways as a sum of consecutive naturals, for example, 28533 + ... + 29905.

It is an arithmetic number, because the mean of its divisors is an integer number (5111280).

Almost surely, 2^40117687 is an apocalyptic number.

40117687 is a deficient number, since it is larger than the sum of its proper divisors (772553).

40117687 is a wasteful number, since it uses less digits than its factorization.

40117687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 40117687 is about 6333.8524611803. The cubic root of 40117687 is about 342.3302641657.

It can be divided in two parts, 40117 and 687, that added together give a palindrome (40804).

The spelling of 40117687 in words is "forty million, one hundred seventeen thousand, six hundred eighty-seven".