40865963 has 8 divisors (see below), whose sum is σ = 43158528. Its totient is φ = 38616424.

The previous prime is 40865947. The next prime is 40866037. The reversal of 40865963 is 36956804.

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

It is a cyclic number.

It is not a de Polignac number, because 40865963 - 2⁴ = 40865947 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 40865963.

It is not an unprimeable number, because it can be changed into a prime (40865063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8795 + ... + 12612.

It is an arithmetic number, because the mean of its divisors is an integer number (5394816).

Almost surely, 2^40865963 is an apocalyptic number.

40865963 is a deficient number, since it is larger than the sum of its proper divisors (2292565).

40865963 is a wasteful number, since it uses less digits than its factorization.

40865963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21513.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 40865963 is about 6392.6491378770. The cubic root of 40865963 is about 344.4455506458.

The spelling of 40865963 in words is "forty million, eight hundred sixty-five thousand, nine hundred sixty-three".