9445729 has 2 divisors, whose sum is σ = 9445730. Its totient is φ = 9445728.

The previous prime is 9445721. The next prime is 9445741. The reversal of 9445729 is 9275449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 1151329 = 2880^2 + 1073^2 .

It is a cyclic number.

It is not a de Polignac number, because 9445729 - 2³ = 9445721 is a prime.

9445729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9445691 and 9445700.

It is not a weakly prime, because it can be changed into another prime (9445721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4722864 + 4722865.

It is an arithmetic number, because the mean of its divisors is an integer number (4722865).

Almost surely, 2^9445729 is an apocalyptic number.

It is an amenable number.

9445729 is a deficient number, since it is larger than the sum of its proper divisors (1).

9445729 is an equidigital number, since it uses as much as digits as its factorization.

9445729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 9445729 is about 3073.3904730769. The cubic root of 9445729 is about 211.3871063551.

The spelling of 9445729 in words is "nine million, four hundred forty-five thousand, seven hundred twenty-nine".