3891219 has 12 divisors (see below), whose sum is σ = 5477256. Its totient is φ = 2456928.

The previous prime is 3891203. The next prime is 3891229. The reversal of 3891219 is 9121983.

It is not a de Polignac number, because 3891219 - 2⁴ = 3891203 is a prime.

It is a super-2 number, since 2×3891219² = 30283170611922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3891219.

It is not an unprimeable number, because it can be changed into a prime (3891229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714 + ... + 2879.

It is an arithmetic number, because the mean of its divisors is an integer number (456438).

Almost surely, 2^3891219 is an apocalyptic number.

3891219 is a deficient number, since it is larger than the sum of its proper divisors (1586037).

3891219 is a wasteful number, since it uses less digits than its factorization.

3891219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634 (or 3615 counting only the distinct ones).

The product of its digits is 3888, while the sum is 33.

The square root of 3891219 is about 1972.6172968926. The cubic root of 3891219 is about 157.2878676002.

The spelling of 3891219 in words is "three million, eight hundred ninety-one thousand, two hundred nineteen".