3847381 has 8 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 3764640.

The previous prime is 3847357. The next prime is 3847397. The reversal of 3847381 is 1837483.

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 3847381 - 2¹⁷ = 3716309 is a prime.

It is a super-2 number, since 2×3847381² = 29604681118322, which contains 22 as substring.

It is a Duffinian number.

3847381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3847351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12216 + ... + 12526.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^3847381 is an apocalyptic number.

It is an amenable number.

3847381 is a deficient number, since it is larger than the sum of its proper divisors (83819).

3847381 is a wasteful number, since it uses less digits than its factorization.

3847381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its digits is 16128, while the sum is 34.

The square root of 3847381 is about 1961.4741905006. The cubic root of 3847381 is about 156.6949735080.

The spelling of 3847381 in words is "three million, eight hundred forty-seven thousand, three hundred eighty-one".