998383735609 has 16 divisors (see below), whose sum is σ = 1079325755200. Its totient is φ = 918035695296.

The previous prime is 998383735597. The next prime is 998383735793. The reversal of 998383735609 is 906537383899.

It is a cyclic number.

It is not a de Polignac number, because 998383735609 - 2²³ = 998375347001 is a prime.

It is a super-2 number, since 2×998383735609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998383735309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11948227 + ... + 12031495.

It is an arithmetic number, because the mean of its divisors is an integer number (67457859700).

Almost surely, 2^998383735609 is an apocalyptic number.

It is an amenable number.

998383735609 is a deficient number, since it is larger than the sum of its proper divisors (80942019591).

998383735609 is a wasteful number, since it uses less digits than its factorization.

998383735609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86824.

The product of its (nonzero) digits is 264539520, while the sum is 70.

The spelling of 998383735609 in words is "nine hundred ninety-eight billion, three hundred eighty-three million, seven hundred thirty-five thousand, six hundred nine".