3894681 has 16 divisors (see below), whose sum is σ = 5971968. Its totient is φ = 2211600.

The previous prime is 3894673. The next prime is 3894689. The reversal of 3894681 is 1864983.

It is an interprime number because it is at equal distance from previous prime (3894673) and next prime (3894689).

It is not a de Polignac number, because 3894681 - 2³ = 3894673 is a prime.

It is a super-2 number, since 2×3894681² = 30337080183522, which contains 22 as substring.

It is a Curzon number.

3894681 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3526 + ... + 4496.

It is an arithmetic number, because the mean of its divisors is an integer number (373248).

Almost surely, 2^3894681 is an apocalyptic number.

It is an amenable number.

3894681 is a deficient number, since it is larger than the sum of its proper divisors (2077287).

3894681 is a wasteful number, since it uses less digits than its factorization.

3894681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its digits is 41472, while the sum is 39.

The square root of 3894681 is about 1973.4946161568. The cubic root of 3894681 is about 157.3344998756.

The spelling of 3894681 in words is "three million, eight hundred ninety-four thousand, six hundred eighty-one".