4472534721 has 4 divisors (see below), whose sum is σ = 5963379632. Its totient is φ = 2981689812.

The previous prime is 4472534699. The next prime is 4472534747. The reversal of 4472534721 is 1274352744.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4472534721 - 2¹⁵ = 4472501953 is a prime.

It is a super-3 number, since 3×4472534721³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4472534721.

It is not an unprimeable number, because it can be changed into a prime (4472533721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745422451 + ... + 745422456.

It is an arithmetic number, because the mean of its divisors is an integer number (1490844908).

Almost surely, 2^4472534721 is an apocalyptic number.

It is an amenable number.

4472534721 is a deficient number, since it is larger than the sum of its proper divisors (1490844911).

4472534721 is a wasteful number, since it uses less digits than its factorization.

4472534721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490844910.

The product of its digits is 188160, while the sum is 39.

The square root of 4472534721 is about 66877.0119024467. The cubic root of 4472534721 is about 1647.5979398702.

The spelling of 4472534721 in words is "four billion, four hundred seventy-two million, five hundred thirty-four thousand, seven hundred twenty-one".