4857891 has 8 divisors (see below), whose sum is σ = 6568704. Its totient is φ = 3192840.

The previous prime is 4857829. The next prime is 4857893. The reversal of 4857891 is 1987584.

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

It is not a de Polignac number, because 4857891 - 2¹⁷ = 4726819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4857893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11191 + ... + 11616.

It is an arithmetic number, because the mean of its divisors is an integer number (821088).

Almost surely, 2^4857891 is an apocalyptic number.

4857891 is a deficient number, since it is larger than the sum of its proper divisors (1710813).

4857891 is a wasteful number, since it uses less digits than its factorization.

4857891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22881.

The product of its digits is 80640, while the sum is 42.

The square root of 4857891 is about 2204.0623856869. The cubic root of 4857891 is about 169.3619798636.

The spelling of 4857891 in words is "four million, eight hundred fifty-seven thousand, eight hundred ninety-one".