9073729 has 8 divisors (see below), whose sum is σ = 10516608. Its totient is φ = 7667520.

The previous prime is 9073709. The next prime is 9073747. The reversal of 9073729 is 9273709.

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

It is not a de Polignac number, because 9073729 - 2⁷ = 9073601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9073709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8632 + ... + 9625.

It is an arithmetic number, because the mean of its divisors is an integer number (1314576).

Almost surely, 2^9073729 is an apocalyptic number.

It is an amenable number.

9073729 is a deficient number, since it is larger than the sum of its proper divisors (1442879).

9073729 is a wasteful number, since it uses less digits than its factorization.

9073729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18335.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 9073729 is about 3012.2631027186. The cubic root of 9073729 is about 208.5748475210.

The spelling of 9073729 in words is "nine million, seventy-three thousand, seven hundred twenty-nine".