1992797 has 2 divisors, whose sum is σ = 1992798. Its totient is φ = 1992796.

The previous prime is 1992779. The next prime is 1992803. The reversal of 1992797 is 7972991.

Together with previous prime (1992779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1207801 + 784996 = 1099^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992797 - 2⁶ = 1992733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996398 + 996399.

It is an arithmetic number, because the mean of its divisors is an integer number (996399).

2^1992797 is an apocalyptic number.

It is an amenable number.

1992797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992797 is an equidigital number, since it uses as much as digits as its factorization.

1992797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 44.

The square root of 1992797 is about 1411.6646202268. The cubic root of 1992797 is about 125.8406695234.

The spelling of 1992797 in words is "one million, nine hundred ninety-two thousand, seven hundred ninety-seven".