40366865 has 16 divisors (see below), whose sum is σ = 60393600. Its totient is φ = 25163520.

The previous prime is 40366853. The next prime is 40366873. The reversal of 40366865 is 56866304.

It is not a de Polignac number, because 40366865 - 2¹⁸ = 40104721 is a prime.

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, 52040 + ... + 52809.

It is an arithmetic number, because the mean of its divisors is an integer number (3774600).

Almost surely, 2^40366865 is an apocalyptic number.

It is an amenable number.

40366865 is a deficient number, since it is larger than the sum of its proper divisors (20026735).

40366865 is a wasteful number, since it uses less digits than its factorization.

40366865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104872.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 40366865 is about 6353.4923467334. The cubic root of 40366865 is about 343.0375596005.

It can be divided in two parts, 4036 and 6865, that added together give a palindrome (10901).

The spelling of 40366865 in words is "forty million, three hundred sixty-six thousand, eight hundred sixty-five".