9378729 has 6 divisors (see below), whose sum is σ = 13547066. Its totient is φ = 6252480.

The previous prime is 9378703. The next prime is 9378749. The reversal of 9378729 is 9278739.

It can be written as a sum of positive squares in only one way, i.e., 9363600 + 15129 = 3060^2 + 123^2 .

It is not a de Polignac number, because 9378729 - 2⁵ = 9378697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9378749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 521032 + ... + 521049.

Almost surely, 2^9378729 is an apocalyptic number.

It is an amenable number.

9378729 is a deficient number, since it is larger than the sum of its proper divisors (4168337).

9378729 is a wasteful number, since it uses less digits than its factorization.

9378729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042087 (or 1042084 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 9378729 is about 3062.4710610878. The cubic root of 9378729 is about 210.8861196009.

The spelling of 9378729 in words is "nine million, three hundred seventy-eight thousand, seven hundred twenty-nine".