40386663 has 6 divisors (see below), whose sum is σ = 58336304. Its totient is φ = 26924436.

The previous prime is 40386649. The next prime is 40386667. The reversal of 40386663 is 36668304.

It is not a de Polignac number, because 40386663 - 2⁵ = 40386631 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 (40386667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243695 + ... + 2243712.

Almost surely, 2^40386663 is an apocalyptic number.

40386663 is a deficient number, since it is larger than the sum of its proper divisors (17949641).

40386663 is a wasteful number, since it uses less digits than its factorization.

40386663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487413 (or 4487410 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 40386663 is about 6355.0501964973. The cubic root of 40386663 is about 343.0936315596.

It can be divided in two parts, 4038 and 6663, that added together give a palindrome (10701).

The spelling of 40386663 in words is "forty million, three hundred eighty-six thousand, six hundred sixty-three".