4490040 has 128 divisors (see below), whose sum is σ = 14929920. Its totient is φ = 1075200.

The previous prime is 4490029. The next prime is 4490053. The reversal of 4490040 is 400944.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4489989 and 4490016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63205 + ... + 63275.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

Almost surely, 2^4490040 is an apocalyptic number.

4490040 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 4490040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7464960).

4490040 is an abundant number, since it is smaller than the sum of its proper divisors (10439880).

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

4490040 is a wasteful number, since it uses less digits than its factorization.

4490040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4490040 is about 2118.9714486043. The cubic root of 4490040 is about 164.9744680421.

Adding to 4490040 its reverse (400944), we get a palindrome (4890984).

The spelling of 4490040 in words is "four million, four hundred ninety thousand, forty".