40686936 has 16 divisors (see below), whose sum is σ = 101717400. Its totient is φ = 13562304.

The previous prime is 40686929. The next prime is 40686937. The reversal of 40686936 is 63968604.

40686936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40686936² = 3310853522136192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40686937) 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 3 ways as a sum of consecutive naturals, for example, 847621 + ... + 847668.

Almost surely, 2^40686936 is an apocalyptic number.

It is an amenable number.

40686936 is an abundant number, since it is smaller than the sum of its proper divisors (61030464).

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

40686936 is a wasteful number, since it uses less digits than its factorization.

40686936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695298 (or 1695294 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 40686936 is about 6378.6312011277. The cubic root of 40686936 is about 343.9418280938.

The spelling of 40686936 in words is "forty million, six hundred eighty-six thousand, nine hundred thirty-six".