992857 has 2 divisors, whose sum is σ = 992858. Its totient is φ = 992856.

The previous prime is 992843. The next prime is 992861. The reversal of 992857 is 758299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992016 + 841 = 996^2 + 29^2 .

It is an emirp because it is prime and its reverse (758299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 992857 - 2¹¹ = 990809 is a prime.

It is not a weakly prime, because it can be changed into another prime (992867) 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 as a sum of consecutive naturals, namely, 496428 + 496429.

It is an arithmetic number, because the mean of its divisors is an integer number (496429).

2⁹⁹²⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

992857 is a deficient number, since it is larger than the sum of its proper divisors (1).

992857 is an equidigital number, since it uses as much as digits as its factorization.

992857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 40.

The square root of 992857 is about 996.4220993133. The cubic root of 992857 is about 99.7613308234.

It can be divided in two parts, 992 and 857, that added together give a square (1849 = 43²).

The spelling of 992857 in words is "nine hundred ninety-two thousand, eight hundred fifty-seven".