3894161 has 4 divisors (see below), whose sum is σ = 3914532. Its totient is φ = 3873792.

The previous prime is 3894157. The next prime is 3894167. The reversal of 3894161 is 1614983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1614983 = 17 ⋅94999.

It can be written as a sum of positive squares in 2 ways, for example, as 1809025 + 2085136 = 1345^2 + 1444^2 .

It is a cyclic number.

It is not a de Polignac number, because 3894161 - 2² = 3894157 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3894167) 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 3 ways as a sum of consecutive naturals, for example, 9896 + ... + 10281.

It is an arithmetic number, because the mean of its divisors is an integer number (978633).

Almost surely, 2^3894161 is an apocalyptic number.

It is an amenable number.

3894161 is a deficient number, since it is larger than the sum of its proper divisors (20371).

3894161 is a wasteful number, since it uses less digits than its factorization.

3894161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20370.

The product of its digits is 5184, while the sum is 32.

The square root of 3894161 is about 1973.3628657700. The cubic root of 3894161 is about 157.3274973696.

The spelling of 3894161 in words is "three million, eight hundred ninety-four thousand, one hundred sixty-one".