3891365 has 16 divisors (see below), whose sum is σ = 4942080. Its totient is φ = 2936640.

The previous prime is 3891359. The next prime is 3891379. The reversal of 3891365 is 5631983.

3891365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3891365 - 2²⁰ = 2842789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6530 + ... + 7100.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

Almost surely, 2^3891365 is an apocalyptic number.

It is an amenable number.

3891365 is a deficient number, since it is larger than the sum of its proper divisors (1050715).

3891365 is a wasteful number, since it uses less digits than its factorization.

3891365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 19440, while the sum is 35.

The square root of 3891365 is about 1972.6543032169. The cubic root of 3891365 is about 157.2898347422.

The spelling of 3891365 in words is "three million, eight hundred ninety-one thousand, three hundred sixty-five".