4727891 has 4 divisors (see below), whose sum is σ = 5403312. Its totient is φ = 4052472.

The previous prime is 4727881. The next prime is 4727939. The reversal of 4727891 is 1987274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4727891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4727851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337700 + ... + 337713.

It is an arithmetic number, because the mean of its divisors is an integer number (1350828).

Almost surely, 2^4727891 is an apocalyptic number.

4727891 is a deficient number, since it is larger than the sum of its proper divisors (675421).

4727891 is an equidigital number, since it uses as much as digits as its factorization.

4727891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675420.

The product of its digits is 28224, while the sum is 38.

The square root of 4727891 is about 2174.3714034175. The cubic root of 4727891 is about 167.8375579297.

The spelling of 4727891 in words is "four million, seven hundred twenty-seven thousand, eight hundred ninety-one".