9278729 has 8 divisors (see below), whose sum is σ = 9784320. Its totient is φ = 8781696.

The previous prime is 9278723. The next prime is 9278743.

9278729 is nontrivially palindromic in base 10.

9278729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9278729 - 2⁴ = 9278713 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9278729.

It is not an unprimeable number, because it can be changed into a prime (9278723) 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, 152 + ... + 4310.

It is an arithmetic number, because the mean of its divisors is an integer number (1223040).

Almost surely, 2^9278729 is an apocalyptic number.

It is an amenable number.

9278729 is a deficient number, since it is larger than the sum of its proper divisors (505591).

9278729 is a wasteful number, since it uses less digits than its factorization.

9278729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279.

The product of its digits is 127008, while the sum is 44.

The square root of 9278729 is about 3046.1006221069. The cubic root of 9278729 is about 210.1339206252.

The spelling of 9278729 in words is "nine million, two hundred seventy-eight thousand, seven hundred twenty-nine".