4544440 has 64 divisors (see below), whose sum is σ = 11158560. Its totient is φ = 1658880.

The previous prime is 4544437. The next prime is 4544443. The reversal of 4544440 is 444454.

It is an interprime number because it is at equal distance from previous prime (4544437) and next prime (4544443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4544443) 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, 27799 + ... + 27961.

Almost surely, 2^4544440 is an apocalyptic number.

4544440 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 4544440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5579280).

4544440 is an abundant number, since it is smaller than the sum of its proper divisors (6614120).

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

4544440 is a wasteful number, since it uses less digits than its factorization.

4544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 4544440 is about 2131.7692182786. The cubic root of 4544440 is about 165.6380559306.

Adding to 4544440 its reverse (444454), we get a palindrome (4988894).

The spelling of 4544440 in words is "four million, five hundred forty-four thousand, four hundred forty".