4499840 has 64 divisors (see below), whose sum is σ = 11016000. Its totient is φ = 1757184.

The previous prime is 4499839. The next prime is 4499851. The reversal of 4499840 is 489944.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 4499794 and 4499803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50516 + ... + 50604.

It is an arithmetic number, because the mean of its divisors is an integer number (172125).

Almost surely, 2^4499840 is an apocalyptic number.

4499840 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 4499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5508000).

4499840 is an abundant number, since it is smaller than the sum of its proper divisors (6516160).

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

4499840 is an equidigital number, since it uses as much as digits as its factorization.

4499840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 4499840 is about 2121.2826308628. The cubic root of 4499840 is about 165.0944057239.

The spelling of 4499840 in words is "four million, four hundred ninety-nine thousand, eight hundred forty".