3873641 has 4 divisors (see below), whose sum is σ = 3978372. Its totient is φ = 3768912.

The previous prime is 3873631. The next prime is 3873647. The reversal of 3873641 is 1463783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1463783 = 89 ⋅16447.

It can be written as a sum of positive squares in 2 ways, for example, as 3225616 + 648025 = 1796^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 3873641 - 2⁶ = 3873577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3873598 and 3873607.

It is not an unprimeable number, because it can be changed into a prime (3873647) 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, 52310 + ... + 52383.

It is an arithmetic number, because the mean of its divisors is an integer number (994593).

Almost surely, 2^3873641 is an apocalyptic number.

It is an amenable number.

3873641 is a deficient number, since it is larger than the sum of its proper divisors (104731).

3873641 is a wasteful number, since it uses less digits than its factorization.

3873641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104730.

The product of its digits is 12096, while the sum is 32.

The square root of 3873641 is about 1968.1567518874. The cubic root of 3873641 is about 157.0506685960.

The spelling of 3873641 in words is "three million, eight hundred seventy-three thousand, six hundred forty-one".