4328891 has 4 divisors (see below), whose sum is σ = 4947312. Its totient is φ = 3710472.

The previous prime is 4328887. The next prime is 4328893. The reversal of 4328891 is 1988234.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4328891 - 2² = 4328887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4328893) 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 3 ways as a sum of consecutive naturals, for example, 309200 + ... + 309213.

It is an arithmetic number, because the mean of its divisors is an integer number (1236828).

Almost surely, 2^4328891 is an apocalyptic number.

4328891 is a deficient number, since it is larger than the sum of its proper divisors (618421).

4328891 is an equidigital number, since it uses as much as digits as its factorization.

4328891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618420.

The product of its digits is 13824, while the sum is 35.

The square root of 4328891 is about 2080.5987119096. The cubic root of 4328891 is about 162.9767113905.

The spelling of 4328891 in words is "four million, three hundred twenty-eight thousand, eight hundred ninety-one".