4463440 has 20 divisors (see below), whose sum is σ = 10377684. Its totient is φ = 1785344.

The previous prime is 4463413. The next prime is 4463453. The reversal of 4463440 is 443644.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 3594816 = 932^2 + 1896^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27817 + ... + 27976.

Almost surely, 2^4463440 is an apocalyptic number.

4463440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4463440 is an abundant number, since it is smaller than the sum of its proper divisors (5914244).

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

4463440 is a wasteful number, since it uses less digits than its factorization.

4463440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55806 (or 55800 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 4463440 is about 2112.6854948146. The cubic root of 4463440 is about 164.6480407139.

The spelling of 4463440 in words is "four million, four hundred sixty-three thousand, four hundred forty".