4391616 has 56 divisors (see below), whose sum is σ = 11795760. Its totient is φ = 1441792.

The previous prime is 4391609. The next prime is 4391617. The reversal of 4391616 is 6161934.

It is not an unprimeable number, because it can be changed into a prime (4391617) 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, 16960 + ... + 17216.

Almost surely, 2^4391616 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 4391616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5897880).

4391616 is an abundant number, since it is smaller than the sum of its proper divisors (7404144).

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

4391616 is a wasteful number, since it uses less digits than its factorization.

4391616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 351 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 4391616 is about 2095.6182858527. The cubic root of 4391616 is about 163.7601093151.

The spelling of 4391616 in words is "four million, three hundred ninety-one thousand, six hundred sixteen".