3874381 has 12 divisors (see below), whose sum is σ = 4630908. Its totient is φ = 3229632.

The previous prime is 3874379. The next prime is 3874391. The reversal of 3874381 is 1834783.

It can be written as a sum of positive squares in 2 ways, for example, as 1713481 + 2160900 = 1309^2 + 1470^2 .

It is not a de Polignac number, because 3874381 - 2¹ = 3874379 is a prime.

It is a super-2 number, since 2×3874381² = 30021656266322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3874361) 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 11 ways as a sum of consecutive naturals, for example, 745 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (385909).

Almost surely, 2^3874381 is an apocalyptic number.

It is an amenable number.

3874381 is a deficient number, since it is larger than the sum of its proper divisors (756527).

3874381 is a wasteful number, since it uses less digits than its factorization.

3874381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188 (or 2181 counting only the distinct ones).

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

The square root of 3874381 is about 1968.3447360663. The cubic root of 3874381 is about 157.0606686704.

The spelling of 3874381 in words is "three million, eight hundred seventy-four thousand, three hundred eighty-one".