3894841 has 4 divisors (see below), whose sum is σ = 3935092. Its totient is φ = 3854592.

The previous prime is 3894833. The next prime is 3894857. The reversal of 3894841 is 1484983.

3894841 = 1395² + 1396².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1484983 = 19 ⋅78157.

It can be written as a sum of positive squares in 2 ways, for example, as 1946025 + 1948816 = 1395^2 + 1396^2 .

It is a cyclic number.

It is not a de Polignac number, because 3894841 - 2³ = 3894833 is a prime.

It is a Duffinian number.

3894841 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3894841.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19980 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (983773).

Almost surely, 2^3894841 is an apocalyptic number.

3894841 is the 1396-th centered square number.

It is an amenable number.

3894841 is a deficient number, since it is larger than the sum of its proper divisors (40251).

3894841 is an equidigital number, since it uses as much as digits as its factorization.

3894841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40250.

The product of its digits is 27648, while the sum is 37.

The square root of 3894841 is about 1973.5351529679. The cubic root of 3894841 is about 157.3366543675.

The spelling of 3894841 in words is "three million, eight hundred ninety-four thousand, eight hundred forty-one".