4479440 has 80 divisors (see below), whose sum is σ = 12558720. Its totient is φ = 1451520.

The previous prime is 4479389. The next prime is 4479443. The reversal of 4479440 is 449744.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4479397 and 4479406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4479443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10430 + ... + 10850.

It is an arithmetic number, because the mean of its divisors is an integer number (156984).

Almost surely, 2^4479440 is an apocalyptic number.

4479440 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 4479440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6279360).

4479440 is an abundant number, since it is smaller than the sum of its proper divisors (8079280).

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

4479440 is a wasteful number, since it uses less digits than its factorization.

4479440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 4479440 is about 2116.4687571519. The cubic root of 4479440 is about 164.8445428973.

The spelling of 4479440 in words is "four million, four hundred seventy-nine thousand, four hundred forty".