4539816 has 48 divisors (see below), whose sum is σ = 13022100. Its totient is φ = 1423872.

The previous prime is 4539791. The next prime is 4539817. The reversal of 4539816 is 6189354.

It can be written as a sum of positive squares in 2 ways, for example, as 4536900 + 2916 = 2130^2 + 54^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (4539817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631 + ... + 3078.

Almost surely, 2^4539816 is an apocalyptic number.

It is an amenable number.

4539816 is an abundant number, since it is smaller than the sum of its proper divisors (8482284).

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

4539816 is a wasteful number, since it uses less digits than its factorization.

4539816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738 (or 3731 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 4539816 is about 2130.6843970893. The cubic root of 4539816 is about 165.5818575658.

The spelling of 4539816 in words is "four million, five hundred thirty-nine thousand, eight hundred sixteen".