8457709 has 8 divisors (see below), whose sum is σ = 9263520. Its totient is φ = 7674096.

The previous prime is 8457677. The next prime is 8457727. The reversal of 8457709 is 9077548.

8457709 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 8457709 - 2⁵ = 8457677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4747 + ... + 6280.

It is an arithmetic number, because the mean of its divisors is an integer number (1157940).

Almost surely, 2^8457709 is an apocalyptic number.

It is an amenable number.

8457709 is a deficient number, since it is larger than the sum of its proper divisors (805811).

8457709 is a wasteful number, since it uses less digits than its factorization.

8457709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11099.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 8457709 is about 2908.2140567709. The cubic root of 8457709 is about 203.7437269576.

The spelling of 8457709 in words is "eight million, four hundred fifty-seven thousand, seven hundred nine".