729339812 has 6 divisors (see below), whose sum is σ = 1276344678. Its totient is φ = 364669904.

The previous prime is 729339707. The next prime is 729339817. The reversal of 729339812 is 218933927.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 721137316 + 8202496 = 26854^2 + 2864^2 .

It is a super-2 number, since 2×729339812² = 1063873122736390688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (729339817) 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 as a sum of consecutive naturals, namely, 91167473 + ... + 91167480.

It is an arithmetic number, because the mean of its divisors is an integer number (212724113).

Almost surely, 2^729339812 is an apocalyptic number.

It is an amenable number.

729339812 is a deficient number, since it is larger than the sum of its proper divisors (547004866).

729339812 is a wasteful number, since it uses less digits than its factorization.

729339812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182334957 (or 182334955 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 729339812 is about 27006.2920816613. The cubic root of 729339812 is about 900.1398186067.

The spelling of 729339812 in words is "seven hundred twenty-nine million, three hundred thirty-nine thousand, eight hundred twelve".