9722857 has 4 divisors (see below), whose sum is σ = 9764820. Its totient is φ = 9680896.

The previous prime is 9722837. The next prime is 9722879. The reversal of 9722857 is 7582279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7582279 = 587 ⋅12917.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 8590761 = 1064^2 + 2931^2 .

It is a cyclic number.

It is not a de Polignac number, because 9722857 - 2¹⁹ = 9198569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9722807) 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 3 ways as a sum of consecutive naturals, for example, 20632 + ... + 21097.

It is an arithmetic number, because the mean of its divisors is an integer number (2441205).

Almost surely, 2^9722857 is an apocalyptic number.

It is an amenable number.

9722857 is a deficient number, since it is larger than the sum of its proper divisors (41963).

9722857 is a wasteful number, since it uses less digits than its factorization.

9722857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41962.

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

The square root of 9722857 is about 3118.1496115485. The cubic root of 9722857 is about 213.4345057770.

The spelling of 9722857 in words is "nine million, seven hundred twenty-two thousand, eight hundred fifty-seven".