992689 has 2 divisors, whose sum is σ = 992690. Its totient is φ = 992688.

The previous prime is 992659. The next prime is 992701. The reversal of 992689 is 986299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935089 + 57600 = 967^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 992689 - 2⁷ = 992561 is a prime.

It is not a weakly prime, because it can be changed into another prime (992609) 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, 496344 + 496345.

It is an arithmetic number, because the mean of its divisors is an integer number (496345).

2⁹⁹²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

992689 is a deficient number, since it is larger than the sum of its proper divisors (1).

992689 is an equidigital number, since it uses as much as digits as its factorization.

992689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 992689 is about 996.3377941241. The cubic root of 992689 is about 99.7557036791.

It can be divided in two parts, 992 and 689, that added together give a square (1681 = 41²).

The spelling of 992689 in words is "nine hundred ninety-two thousand, six hundred eighty-nine".