40663885 has 16 divisors (see below), whose sum is σ = 51427584. Its totient is φ = 30805632.

The previous prime is 40663873. The next prime is 40663891. The reversal of 40663885 is 58836604.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40663885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10129 + ... + 13561.

It is an arithmetic number, because the mean of its divisors is an integer number (3214224).

Almost surely, 2^40663885 is an apocalyptic number.

It is an amenable number.

40663885 is a deficient number, since it is larger than the sum of its proper divisors (10763699).

40663885 is a wasteful number, since it uses less digits than its factorization.

40663885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 40663885 is about 6376.8240527711. The cubic root of 40663885 is about 343.8768629268.

The spelling of 40663885 in words is "forty million, six hundred sixty-three thousand, eight hundred eighty-five".