4327891 has 4 divisors (see below), whose sum is σ = 4351984. Its totient is φ = 4303800.

The previous prime is 4327867. The next prime is 4327909. The reversal of 4327891 is 1987234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1987234 = 2 ⋅993617.

It is a cyclic number.

It is not a de Polignac number, because 4327891 - 2⁵ = 4327859 is a prime.

It is a Duffinian number.

4327891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4327861) 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, 11775 + ... + 12136.

It is an arithmetic number, because the mean of its divisors is an integer number (1087996).

Almost surely, 2^4327891 is an apocalyptic number.

4327891 is a deficient number, since it is larger than the sum of its proper divisors (24093).

4327891 is a wasteful number, since it uses less digits than its factorization.

4327891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24092.

The product of its digits is 12096, while the sum is 34.

The square root of 4327891 is about 2080.3583825870. The cubic root of 4327891 is about 162.9641608887.

The spelling of 4327891 in words is "four million, three hundred twenty-seven thousand, eight hundred ninety-one".