102998309 has 2 divisors, whose sum is σ = 102998310. Its totient is φ = 102998308.

The previous prime is 102998303. The next prime is 102998327. The reversal of 102998309 is 903899201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102921025 + 77284 = 10145^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 102998309 - 2⁴ = 102998293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102998303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51499154 + 51499155.

It is an arithmetic number, because the mean of its divisors is an integer number (51499155).

Almost surely, 2^102998309 is an apocalyptic number.

It is an amenable number.

102998309 is a deficient number, since it is larger than the sum of its proper divisors (1).

102998309 is an equidigital number, since it uses as much as digits as its factorization.

102998309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 102998309 is about 10148.8082551598. The cubic root of 102998309 is about 468.7522494944.

The spelling of 102998309 in words is "one hundred two million, nine hundred ninety-eight thousand, three hundred nine".