4500489721 has 24 divisors (see below), whose sum is σ = 5675934600. Its totient is φ = 3536854272.

The previous prime is 4500489689. The next prime is 4500489731. The reversal of 4500489721 is 1279840054.

It can be written as a sum of positive squares in 4 ways, for example, as 241491600 + 4258998121 = 15540^2 + 65261^2 .

It is not a de Polignac number, because 4500489721 - 2⁵ = 4500489689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4500489731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71205 + ... + 118621.

It is an arithmetic number, because the mean of its divisors is an integer number (236497275).

Almost surely, 2^4500489721 is an apocalyptic number.

It is an amenable number.

4500489721 is a deficient number, since it is larger than the sum of its proper divisors (1175444879).

4500489721 is a wasteful number, since it uses less digits than its factorization.

4500489721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47593 (or 47586 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 4500489721 is about 67085.6893905101. The cubic root of 4500489721 is about 1651.0235120199.

The spelling of 4500489721 in words is "four billion, five hundred million, four hundred eighty-nine thousand, seven hundred twenty-one".