3912865 has 8 divisors (see below), whose sum is σ = 5122368. Its totient is φ = 2845680.

The previous prime is 3912859. The next prime is 3912877. The reversal of 3912865 is 5682193.

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

It is not a de Polignac number, because 3912865 - 2⁵ = 3912833 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 3912865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35517 + ... + 35626.

It is an arithmetic number, because the mean of its divisors is an integer number (640296).

Almost surely, 2^3912865 is an apocalyptic number.

It is an amenable number.

3912865 is a deficient number, since it is larger than the sum of its proper divisors (1209503).

3912865 is a wasteful number, since it uses less digits than its factorization.

3912865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71159.

The product of its digits is 12960, while the sum is 34.

The square root of 3912865 is about 1978.0963070589. The cubic root of 3912865 is about 157.5789811310.

It can be divided in two parts, 39128 and 65, that added together give a palindrome (39193).

The spelling of 3912865 in words is "three million, nine hundred twelve thousand, eight hundred sixty-five".