729392243 has 4 divisors (see below), whose sum is σ = 733467240. Its totient is φ = 725317248.

The previous prime is 729392233. The next prime is 729392249. The reversal of 729392243 is 342293927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342293927 = 367 ⋅932681.

It is a cyclic number.

It is not a de Polignac number, because 729392243 - 2²⁶ = 662283379 is a prime.

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 729392243.

It is not an unprimeable number, because it can be changed into a prime (729392249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037230 + ... + 2037587.

It is an arithmetic number, because the mean of its divisors is an integer number (183366810).

Almost surely, 2^729392243 is an apocalyptic number.

729392243 is a deficient number, since it is larger than the sum of its proper divisors (4074997).

729392243 is a wasteful number, since it uses less digits than its factorization.

729392243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074996.

The product of its digits is 163296, while the sum is 41.

The square root of 729392243 is about 27007.2627824443. The cubic root of 729392243 is about 900.1613879306.

The spelling of 729392243 in words is "seven hundred twenty-nine million, three hundred ninety-two thousand, two hundred forty-three".