3891873 has 8 divisors (see below), whose sum is σ = 5222848. Its totient is φ = 2577744.

The previous prime is 3891871. The next prime is 3891883. The reversal of 3891873 is 3781983.

3891873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3891873 - 2¹ = 3891871 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3891871) 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, 3661 + ... + 4602.

It is an arithmetic number, because the mean of its divisors is an integer number (652856).

Almost surely, 2^3891873 is an apocalyptic number.

It is an amenable number.

3891873 is a deficient number, since it is larger than the sum of its proper divisors (1330975).

3891873 is a wasteful number, since it uses less digits than its factorization.

3891873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423.

The product of its digits is 36288, while the sum is 39.

The square root of 3891873 is about 1972.7830595380. The cubic root of 3891873 is about 157.2966789352.

The spelling of 3891873 in words is "three million, eight hundred ninety-one thousand, eight hundred seventy-three".