9120857 has 8 divisors (see below), whose sum is σ = 10077696. Its totient is φ = 8210752.

The previous prime is 9120829. The next prime is 9120871. The reversal of 9120857 is 7580219.

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 9120857 - 2¹² = 9116761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9120887) 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, 11273 + ... + 12054.

It is an arithmetic number, because the mean of its divisors is an integer number (1259712).

Almost surely, 2^9120857 is an apocalyptic number.

It is an amenable number.

9120857 is a deficient number, since it is larger than the sum of its proper divisors (956839).

9120857 is a wasteful number, since it uses less digits than its factorization.

9120857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23367.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 9120857 is about 3020.0756613039. The cubic root of 9120857 is about 208.9353294566.

The spelling of 9120857 in words is "nine million, one hundred twenty thousand, eight hundred fifty-seven".