4391304391 has 8 divisors (see below), whose sum is σ = 4665490704. Its totient is φ = 4118881920.

The previous prime is 4391304389. The next prime is 4391304397. The reversal of 4391304391 is 1934031934.

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

It is a cyclic number.

It is not a de Polignac number, because 4391304391 - 2¹ = 4391304389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4391304391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391304397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435825 + ... + 445786.

It is an arithmetic number, because the mean of its divisors is an integer number (583186338).

Almost surely, 2^4391304391 is an apocalyptic number.

4391304391 is a deficient number, since it is larger than the sum of its proper divisors (274186313).

4391304391 is a wasteful number, since it uses less digits than its factorization.

4391304391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881921.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 4391304391 is about 66266.9177719924. The cubic root of 4391304391 is about 1637.5623600050.

The spelling of 4391304391 in words is "four billion, three hundred ninety-one million, three hundred four thousand, three hundred ninety-one".