4573729 has 4 divisors (see below), whose sum is σ = 4581040. Its totient is φ = 4566420.

The previous prime is 4573727. The next prime is 4573733. The reversal of 4573729 is 9273754.

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 a cyclic number.

It is not a de Polignac number, because 4573729 - 2¹ = 4573727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4573727) 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, 2619 + ... + 4000.

It is an arithmetic number, because the mean of its divisors is an integer number (1145260).

Almost surely, 2^4573729 is an apocalyptic number.

It is an amenable number.

4573729 is a deficient number, since it is larger than the sum of its proper divisors (7311).

4573729 is an equidigital number, since it uses as much as digits as its factorization.

4573729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7310.

The product of its digits is 52920, while the sum is 37.

The square root of 4573729 is about 2138.6278311104. The cubic root of 4573729 is about 165.9931409562.

It can be divided in two parts, 457 and 3729, that added together give a triangular number (4186 = T₉₁).

The spelling of 4573729 in words is "four million, five hundred seventy-three thousand, seven hundred twenty-nine".