729014009 has 4 divisors (see below), whose sum is σ = 771897204. Its totient is φ = 686130816.

The previous prime is 729013991. The next prime is 729014017. The reversal of 729014009 is 900410927.

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

It can be written as a sum of positive squares in 2 ways, for example, as 594384400 + 134629609 = 24380^2 + 11603^2 .

It is a cyclic number.

It is not a de Polignac number, because 729014009 - 2¹² = 729009913 is a prime.

It is a super-2 number, since 2×729014009² = 1062922850636504162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729014029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21441572 + ... + 21441605.

It is an arithmetic number, because the mean of its divisors is an integer number (192974301).

Almost surely, 2^729014009 is an apocalyptic number.

It is an amenable number.

729014009 is a deficient number, since it is larger than the sum of its proper divisors (42883195).

729014009 is a wasteful number, since it uses less digits than its factorization.

729014009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42883194.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 729014009 is about 27000.2594246796. The cubic root of 729014009 is about 900.0057649836.

The spelling of 729014009 in words is "seven hundred twenty-nine million, fourteen thousand, nine".