4331091 has 4 divisors (see below), whose sum is σ = 5774792. Its totient is φ = 2887392.

The previous prime is 4331087. The next prime is 4331099. The reversal of 4331091 is 1901334.

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

It is not a de Polignac number, because 4331091 - 2² = 4331087 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4331099) 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, 721846 + ... + 721851.

It is an arithmetic number, because the mean of its divisors is an integer number (1443698).

Almost surely, 2^4331091 is an apocalyptic number.

4331091 is a deficient number, since it is larger than the sum of its proper divisors (1443701).

4331091 is a wasteful number, since it uses less digits than its factorization.

4331091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443700.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 4331091 is about 2081.1273387277. The cubic root of 4331091 is about 163.0043156924.

The spelling of 4331091 in words is "four million, three hundred thirty-one thousand, ninety-one".