98009 has 2 divisors, whose sum is σ = 98010. Its totient is φ = 98008.

The previous prime is 97987. The next prime is 98011. The reversal of 98009 is 90089.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73984 + 24025 = 272^2 + 155^2 .

It is an emirp because it is prime and its reverse (90089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98009 - 2¹² = 93913 is a prime.

Together with 98011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49004 + 49005.

It is an arithmetic number, because the mean of its divisors is an integer number (49005).

2⁹⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

98009 is a deficient number, since it is larger than the sum of its proper divisors (1).

98009 is an equidigital number, since it uses as much as digits as its factorization.

98009 is an evil number, because the sum of its binary digits is even.

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

The square root of 98009 is about 313.0638912427. The cubic root of 98009 is about 46.1057742354.

The spelling of 98009 in words is "ninety-eight thousand, nine".