40318865 has 16 divisors (see below), whose sum is σ = 49538496. Its totient is φ = 31492800.

The previous prime is 40318847. The next prime is 40318877. The reversal of 40318865 is 56881304.

It is not a de Polignac number, because 40318865 - 2⁶ = 40318801 is a prime.

It is a super-2 number, since 2×40318865² = 3251221749776450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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, 49310 + ... + 50120.

It is an arithmetic number, because the mean of its divisors is an integer number (3096156).

Almost surely, 2^40318865 is an apocalyptic number.

It is an amenable number.

40318865 is a deficient number, since it is larger than the sum of its proper divisors (9219631).

40318865 is a wasteful number, since it uses less digits than its factorization.

40318865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40318865 is about 6349.7137730767. The cubic root of 40318865 is about 342.9015376954.

The spelling of 40318865 in words is "forty million, three hundred eighteen thousand, eight hundred sixty-five".