4449720 has 64 divisors (see below), whose sum is σ = 14567040. Its totient is φ = 1078400.

The previous prime is 4449701. The next prime is 4449749. The reversal of 4449720 is 279444.

4449720 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (227610).

Almost surely, 2^4449720 is an apocalyptic number.

4449720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4449720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7283520).

4449720 is an abundant number, since it is smaller than the sum of its proper divisors (10117320).

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

4449720 is a wasteful number, since it uses less digits than its factorization.

4449720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3392 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 4449720 is about 2109.4359435641. The cubic root of 4449720 is about 164.4791657603.

The spelling of 4449720 in words is "four million, four hundred forty-nine thousand, seven hundred twenty".