729439166 has 4 divisors (see below), whose sum is σ = 1094158752. Its totient is φ = 364719582.

The previous prime is 729439163. The next prime is 729439171. The reversal of 729439166 is 661934927.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 729439166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729439163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182359790 + ... + 182359793.

It is an arithmetic number, because the mean of its divisors is an integer number (273539688).

Almost surely, 2^729439166 is an apocalyptic number.

729439166 is a deficient number, since it is larger than the sum of its proper divisors (364719586).

729439166 is a wasteful number, since it uses less digits than its factorization.

729439166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364719585.

The product of its digits is 489888, while the sum is 47.

The square root of 729439166 is about 27008.1314792416. The cubic root of 729439166 is about 900.1806904698.

The spelling of 729439166 in words is "seven hundred twenty-nine million, four hundred thirty-nine thousand, one hundred sixty-six".