998396969 has 2 divisors, whose sum is σ = 998396970.
Its totient is φ = 998396968.
The previous prime is 998396951. The next prime is 998397053. The reversal of 998396969 is 969693899.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 664969369 + 333427600 = 25787^2 + 18260^2
It is a cyclic number.
It is not a de Polignac number, because 998396969 - 28 = 998396713 is a prime.
It is a super-2 number, since 2×9983969692 = 1993593015416773922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 998396899 and 998396908.
It is not a weakly prime, because it can be changed into another prime (998396909) 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 as a sum of consecutive naturals, namely, 499198484 + 499198485.
It is an arithmetic number, because the mean of its divisors is an integer number (499198485).
Almost surely, 2998396969 is an apocalyptic number.
It is an amenable number.
998396969 is a deficient number, since it is larger than the sum of its proper divisors (1).
998396969 is an equidigital number, since it uses as much as digits as its factorization.
998396969 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 51018336, while the sum is 68.
The square root of 998396969 is about 31597.4202902705.
The cubic root of 998396969 is about 999.4653705556.
The spelling of 998396969 in words is "nine hundred ninety-eight million, three hundred ninety-six thousand, nine hundred sixty-nine".