3891165 has 8 divisors (see below), whose sum is σ = 6225888. Its totient is φ = 2075280.

The previous prime is 3891161. The next prime is 3891197. The reversal of 3891165 is 5611983.

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

It is not a de Polignac number, because 3891165 - 2² = 3891161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129691 + ... + 129720.

It is an arithmetic number, because the mean of its divisors is an integer number (778236).

Almost surely, 2^3891165 is an apocalyptic number.

It is an amenable number.

3891165 is a deficient number, since it is larger than the sum of its proper divisors (2334723).

3891165 is a wasteful number, since it uses less digits than its factorization.

3891165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259419.

The product of its digits is 6480, while the sum is 33.

The square root of 3891165 is about 1972.6036094462. The cubic root of 3891165 is about 157.2871400147.

The spelling of 3891165 in words is "three million, eight hundred ninety-one thousand, one hundred sixty-five".