729004873 has 4 divisors (see below), whose sum is σ = 733218948. Its totient is φ = 724790800.

The previous prime is 729004867. The next prime is 729004883. The reversal of 729004873 is 378400927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 583850569 + 145154304 = 24163^2 + 12048^2 .

It is a cyclic number.

It is not a de Polignac number, because 729004873 - 2⁵ = 729004841 is a prime.

It is a super-2 number, since 2×729004873² = 1062896209715492258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729004883) 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, 2106778 + ... + 2107123.

It is an arithmetic number, because the mean of its divisors is an integer number (183304737).

Almost surely, 2^729004873 is an apocalyptic number.

It is an amenable number.

729004873 is a deficient number, since it is larger than the sum of its proper divisors (4214075).

729004873 is a wasteful number, since it uses less digits than its factorization.

729004873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214074.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 729004873 is about 27000.0902405899. The cubic root of 729004873 is about 900.0020053453.

The spelling of 729004873 in words is "seven hundred twenty-nine million, four thousand, eight hundred seventy-three".