4509144 has 24 divisors (see below), whose sum is σ = 12212460. Its totient is φ = 1503024.

The previous prime is 4509143. The next prime is 4509149. The reversal of 4509144 is 4419054.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×4509144² = 40664759225472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4509143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31242 + ... + 31385.

Almost surely, 2^4509144 is an apocalyptic number.

It is an amenable number.

4509144 is an abundant number, since it is smaller than the sum of its proper divisors (7703316).

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

4509144 is a wasteful number, since it uses less digits than its factorization.

4509144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62639 (or 62632 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4509144 is about 2123.4745112669. The cubic root of 4509144 is about 165.2081120566.

The spelling of 4509144 in words is "four million, five hundred nine thousand, one hundred forty-four".