4499440 has 40 divisors (see below), whose sum is σ = 11414448. Its totient is φ = 1635840.

The previous prime is 4499431. The next prime is 4499489. The reversal of 4499440 is 449944.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 4499396 and 4499405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1677 + ... + 3436.

Almost surely, 2^4499440 is an apocalyptic number.

4499440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4499440 is an abundant number, since it is smaller than the sum of its proper divisors (6915008).

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

4499440 is a wasteful number, since it uses less digits than its factorization.

4499440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5137 (or 5131 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 4499440 is about 2121.1883461871. The cubic root of 4499440 is about 165.0895137189.

It can be divided in two parts, 449 and 9440, that added together give a palindrome (9889).

The spelling of 4499440 in words is "four million, four hundred ninety-nine thousand, four hundred forty".