729409351 has 4 divisors (see below), whose sum is σ = 795719304. Its totient is φ = 663099400.

The previous prime is 729409349. The next prime is 729409367. The reversal of 729409351 is 153904927.

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

It is a cyclic number.

It is not a de Polignac number, because 729409351 - 2¹ = 729409349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729409321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33154960 + ... + 33154981.

It is an arithmetic number, because the mean of its divisors is an integer number (198929826).

Almost surely, 2^729409351 is an apocalyptic number.

729409351 is a deficient number, since it is larger than the sum of its proper divisors (66309953).

729409351 is a wasteful number, since it uses less digits than its factorization.

729409351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66309952.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 729409351 is about 27007.5795102042. The cubic root of 729409351 is about 900.1684256806.

The spelling of 729409351 in words is "seven hundred twenty-nine million, four hundred nine thousand, three hundred fifty-one".