9275729 has 4 divisors (see below), whose sum is σ = 9296484. Its totient is φ = 9254976.

The previous prime is 9275701. The next prime is 9275731.

It is a happy number.

9275729 is nontrivially palindromic in base 10.

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 6385729 + 2890000 = 2527^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 9275729 - 2⁸ = 9275473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9275759) 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, 9692 + ... + 10605.

It is an arithmetic number, because the mean of its divisors is an integer number (2324121).

Almost surely, 2^9275729 is an apocalyptic number.

It is an amenable number.

9275729 is a deficient number, since it is larger than the sum of its proper divisors (20755).

9275729 is a wasteful number, since it uses less digits than its factorization.

9275729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20754.

The product of its digits is 79380, while the sum is 41.

The square root of 9275729 is about 3045.6081494506. The cubic root of 9275729 is about 210.1112713409. Note that the first 3 decimals are identical.

The spelling of 9275729 in words is "nine million, two hundred seventy-five thousand, seven hundred twenty-nine".