4391064 has 64 divisors (see below), whose sum is σ = 12636000. Its totient is φ = 1411200.

The previous prime is 4391063. The next prime is 4391081. The reversal of 4391064 is 4601934.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5914 + ... + 6614.

Almost surely, 2^4391064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4391064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6318000).

4391064 is an abundant number, since it is smaller than the sum of its proper divisors (8244936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4391064 is a wasteful number, since it uses less digits than its factorization.

4391064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 4391064 is about 2095.4865783393. The cubic root of 4391064 is about 163.7532478038.

Adding to 4391064 its reverse (4601934), we get a palindrome (8992998).

The spelling of 4391064 in words is "four million, three hundred ninety-one thousand, sixty-four".