4391013 has 16 divisors (see below), whose sum is σ = 6423552. Its totient is φ = 2646000.

The previous prime is 4391011. The next prime is 4391017. The reversal of 4391013 is 3101934.

It is not a de Polignac number, because 4391013 - 2¹ = 4391011 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8698 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (401472).

Almost surely, 2^4391013 is an apocalyptic number.

It is an amenable number.

4391013 is a deficient number, since it is larger than the sum of its proper divisors (2032539).

4391013 is a wasteful number, since it uses less digits than its factorization.

4391013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

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

The square root of 4391013 is about 2095.4744092926. The cubic root of 4391013 is about 163.7526138308.

Adding to 4391013 its reverse (3101934), we get a palindrome (7492947).

The spelling of 4391013 in words is "four million, three hundred ninety-one thousand, thirteen".