40335865 has 8 divisors (see below), whose sum is σ = 48882888. Its totient is φ = 31948800.

The previous prime is 40335863. The next prime is 40335871. The reversal of 40335865 is 56853304.

It can be written as a sum of positive squares in 4 ways, for example, as 5419584 + 34916281 = 2328^2 + 5909^2 .

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

It is not a de Polignac number, because 40335865 - 2¹ = 40335863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40335865.

It is not an unprimeable number, because it can be changed into a prime (40335863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39432 + ... + 40441.

It is an arithmetic number, because the mean of its divisors is an integer number (6110361).

Almost surely, 2^40335865 is an apocalyptic number.

It is an amenable number.

40335865 is a deficient number, since it is larger than the sum of its proper divisors (8547023).

40335865 is a wasteful number, since it uses less digits than its factorization.

40335865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79979.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 40335865 is about 6351.0522750171. The cubic root of 40335865 is about 342.9497244606.

The spelling of 40335865 in words is "forty million, three hundred thirty-five thousand, eight hundred sixty-five".