4491396 has 96 divisors (see below), whose sum is σ = 14362880. Its totient is φ = 1181952.

The previous prime is 4491359. The next prime is 4491401. The reversal of 4491396 is 6931944.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 4491396.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9600 + ... + 10056.

Almost surely, 2^4491396 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 4491396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7181440).

4491396 is an abundant number, since it is smaller than the sum of its proper divisors (9871484).

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

4491396 is a wasteful number, since it uses less digits than its factorization.

4491396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 482 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 4491396 is about 2119.2913910079. The cubic root of 4491396 is about 164.9910738973.

The spelling of 4491396 in words is "four million, four hundred ninety-one thousand, three hundred ninety-six".