98000009 has 4 divisors (see below), whose sum is σ = 99180816. Its totient is φ = 96819204.

The previous prime is 97999949. The next prime is 98000027. The reversal of 98000009 is 90000089.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98000009 - 2⁸ = 97999753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (98000039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590279 + ... + 590444.

It is an arithmetic number, because the mean of its divisors is an integer number (24795204).

Almost surely, 2^98000009 is an apocalyptic number.

It is an amenable number.

98000009 is a deficient number, since it is larger than the sum of its proper divisors (1180807).

98000009 is a wasteful number, since it uses less digits than its factorization.

98000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180806.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 98000009 is about 9899.4953911803. The cubic root of 98000009 is about 461.0436433194.

The spelling of 98000009 in words is "ninety-eight million, nine", and thus it is an aban number and an uban number.