729696239 has 4 divisors (see below), whose sum is σ = 730090200. Its totient is φ = 729302280.

The previous prime is 729696223. The next prime is 729696281. The reversal of 729696239 is 932696927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932696927 = 29 ⋅32161963.

It is a cyclic number.

It is not a de Polignac number, because 729696239 - 2⁴ = 729696223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729696299) 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, 194189 + ... + 197910.

It is an arithmetic number, because the mean of its divisors is an integer number (182522550).

Almost surely, 2^729696239 is an apocalyptic number.

729696239 is a deficient number, since it is larger than the sum of its proper divisors (393961).

729696239 is a wasteful number, since it uses less digits than its factorization.

729696239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393960.

The product of its digits is 2204496, while the sum is 53.

The square root of 729696239 is about 27012.8902378105. The cubic root of 729696239 is about 900.2864269413.

The spelling of 729696239 in words is "seven hundred twenty-nine million, six hundred ninety-six thousand, two hundred thirty-nine".