4433440 has 72 divisors (see below), whose sum is σ = 11563020. Its totient is φ = 1605120.

The previous prime is 4433423. The next prime is 4433449. The reversal of 4433440 is 443344.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 156816 = 2068^2 + 396^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4433449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19246 + ... + 19474.

Almost surely, 2^4433440 is an apocalyptic number.

4433440 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 4433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5781510).

4433440 is an abundant number, since it is smaller than the sum of its proper divisors (7129580).

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

4433440 is a wasteful number, since it uses less digits than its factorization.

4433440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 4433440 is about 2105.5735560650. The cubic root of 4433440 is about 164.2783296708.

Adding to 4433440 its reverse (443344), we get a palindrome (4876784).

It can be divided in two parts, 443 and 3440, that added together give a palindrome (3883).

The spelling of 4433440 in words is "four million, four hundred thirty-three thousand, four hundred forty".