3821291 has 8 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 3724840.

The previous prime is 3821273. The next prime is 3821317. The reversal of 3821291 is 1921283.

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 3821291 - 2¹⁴ = 3804907 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 3821291.

It is not an unprimeable number, because it can be changed into a prime (3821221) 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, 7346 + ... + 7848.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^3821291 is an apocalyptic number.

3821291 is a deficient number, since it is larger than the sum of its proper divisors (97813).

3821291 is a wasteful number, since it uses less digits than its factorization.

3821291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its digits is 864, while the sum is 26.

The square root of 3821291 is about 1954.8122672011. The cubic root of 3821291 is about 156.3399746326.

The spelling of 3821291 in words is "three million, eight hundred twenty-one thousand, two hundred ninety-one".