729733961 has 8 divisors (see below), whose sum is σ = 797607648. Its totient is φ = 662116000.

The previous prime is 729733883. The next prime is 729733967. The reversal of 729733961 is 169337927.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729733961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729733967) 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 7 ways as a sum of consecutive naturals, for example, 57935 + ... + 69396.

It is an arithmetic number, because the mean of its divisors is an integer number (99700956).

Almost surely, 2^729733961 is an apocalyptic number.

It is an amenable number.

729733961 is a deficient number, since it is larger than the sum of its proper divisors (67873687).

729733961 is a wasteful number, since it uses less digits than its factorization.

729733961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127863.

The product of its digits is 428652, while the sum is 47.

The square root of 729733961 is about 27013.5884510000. The cubic root of 729733961 is about 900.3019402548.

The spelling of 729733961 in words is "seven hundred twenty-nine million, seven hundred thirty-three thousand, nine hundred sixty-one".