729028549 has 4 divisors (see below), whose sum is σ = 729232960. Its totient is φ = 728824140.

The previous prime is 729028513. The next prime is 729028567. The reversal of 729028549 is 945820927.

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, and also an emirpimes, since its reverse is a distinct semiprime: 945820927 = 23 ⋅41122649.

It is a cyclic number.

It is not a de Polignac number, because 729028549 - 2¹⁹ = 728504261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 729028499 and 729028508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729028049) 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, 96759 + ... + 104020.

It is an arithmetic number, because the mean of its divisors is an integer number (182308240).

Almost surely, 2^729028549 is an apocalyptic number.

It is an amenable number.

729028549 is a deficient number, since it is larger than the sum of its proper divisors (204411).

729028549 is a wasteful number, since it uses less digits than its factorization.

729028549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204410.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 729028549 is about 27000.5286800092. The cubic root of 729028549 is about 900.0117484063.

The spelling of 729028549 in words is "seven hundred twenty-nine million, twenty-eight thousand, five hundred forty-nine".