729396133 has 4 divisors (see below), whose sum is σ = 749109580. Its totient is φ = 709682688.

The previous prime is 729396113. The next prime is 729396163. The reversal of 729396133 is 331693927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331693927 = 277 ⋅1197451.

It can be written as a sum of positive squares in 2 ways, for example, as 556157889 + 173238244 = 23583^2 + 13162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729396133 is a prime.

It is a super-3 number, since 3×729396133³ (a number of 28 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 729396133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729396113) 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, 9856668 + ... + 9856741.

It is an arithmetic number, because the mean of its divisors is an integer number (187277395).

Almost surely, 2^729396133 is an apocalyptic number.

It is an amenable number.

729396133 is a deficient number, since it is larger than the sum of its proper divisors (19713447).

729396133 is a wasteful number, since it uses less digits than its factorization.

729396133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19713446.

The product of its digits is 183708, while the sum is 43.

The square root of 729396133 is about 27007.3348000131. The cubic root of 729396133 is about 900.1629881769.

The spelling of 729396133 in words is "seven hundred twenty-nine million, three hundred ninety-six thousand, one hundred thirty-three".