729442969 has 4 divisors (see below), whose sum is σ = 729584640. Its totient is φ = 729301300.

The previous prime is 729442957. The next prime is 729442993. The reversal of 729442969 is 969244927.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 729442969 - 2¹⁷ = 729311897 is a prime.

It is a super-2 number, since 2×729442969² = 1064174090047069922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729442939) 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 in 3 ways as a sum of consecutive naturals, for example, 62809 + ... + 73510.

It is an arithmetic number, because the mean of its divisors is an integer number (182396160).

Almost surely, 2^729442969 is an apocalyptic number.

It is an amenable number.

729442969 is a deficient number, since it is larger than the sum of its proper divisors (141671).

729442969 is a wasteful number, since it uses less digits than its factorization.

729442969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141670.

The product of its digits is 1959552, while the sum is 52.

The square root of 729442969 is about 27008.2018838722. The cubic root of 729442969 is about 900.1822548595.

The spelling of 729442969 in words is "seven hundred twenty-nine million, four hundred forty-two thousand, nine hundred sixty-nine".