998936797 has 2 divisors, whose sum is σ = 998936798. Its totient is φ = 998936796.

The previous prime is 998936717. The next prime is 998936803. The reversal of 998936797 is 797639899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839318841 + 159617956 = 28971^2 + 12634^2 .

It is a cyclic number.

It is not a de Polignac number, because 998936797 - 2¹¹ = 998934749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998936707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499468398 + 499468399.

It is an arithmetic number, because the mean of its divisors is an integer number (499468399).

Almost surely, 2^998936797 is an apocalyptic number.

It is an amenable number.

998936797 is a deficient number, since it is larger than the sum of its proper divisors (1).

998936797 is an equidigital number, since it uses as much as digits as its factorization.

998936797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46294416, while the sum is 67.

The square root of 998936797 is about 31605.9614155305. The cubic root of 998936797 is about 999.6454733257.

The spelling of 998936797 in words is "nine hundred ninety-eight million, nine hundred thirty-six thousand, seven hundred ninety-seven".