3941581 has 8 divisors (see below), whose sum is σ = 4523904. Its totient is φ = 3364080.

The previous prime is 3941551. The next prime is 3941611. The reversal of 3941581 is 1851493.

3941581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3941551) and next prime (3941611).

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 3941581 - 2¹⁷ = 3810509 is a prime.

It is a super-2 number, since 2×3941581² = 31072121559122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3941551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (565488).

Almost surely, 2^3941581 is an apocalyptic number.

It is an amenable number.

3941581 is a deficient number, since it is larger than the sum of its proper divisors (582323).

3941581 is a wasteful number, since it uses less digits than its factorization.

3941581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411.

The product of its digits is 4320, while the sum is 31.

The square root of 3941581 is about 1985.3415323314. The cubic root of 3941581 is about 157.9635257364.

The spelling of 3941581 in words is "three million, nine hundred forty-one thousand, five hundred eighty-one".