998585369 has 2 divisors, whose sum is σ = 998585370. Its totient is φ = 998585368.

The previous prime is 998585339. The next prime is 998585387. The reversal of 998585369 is 963585899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574225369 + 424360000 = 23963^2 + 20600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998585369 is a prime.

It is a super-2 number, since 2×998585369² = 1994345478361732322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (998585339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499292684 + 499292685.

It is an arithmetic number, because the mean of its divisors is an integer number (499292685).

Almost surely, 2^998585369 is an apocalyptic number.

It is an amenable number.

998585369 is a deficient number, since it is larger than the sum of its proper divisors (1).

998585369 is an equidigital number, since it uses as much as digits as its factorization.

998585369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20995200, while the sum is 62.

The square root of 998585369 is about 31600.4014056784. The cubic root of 998585369 is about 999.5282338050.

The spelling of 998585369 in words is "nine hundred ninety-eight million, five hundred eighty-five thousand, three hundred sixty-nine".