4391065 has 16 divisors (see below), whose sum is σ = 6082560. Its totient is φ = 2980800.

The previous prime is 4391063. The next prime is 4391081. The reversal of 4391065 is 5601934.

It is not a de Polignac number, because 4391065 - 2¹ = 4391063 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 (4391063) 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, 3240 + ... + 4390.

It is an arithmetic number, because the mean of its divisors is an integer number (380160).

Almost surely, 2^4391065 is an apocalyptic number.

It is an amenable number.

4391065 is a deficient number, since it is larger than the sum of its proper divisors (1691495).

4391065 is a wasteful number, since it uses less digits than its factorization.

4391065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 4391065 is about 2095.4868169473. The cubic root of 4391065 is about 163.7532602346.

Adding to 4391065 its reverse (5601934), we get a palindrome (9992999).

The spelling of 4391065 in words is "four million, three hundred ninety-one thousand, sixty-five".