100098989 has 2 divisors, whose sum is σ = 100098990. Its totient is φ = 100098988.

The previous prime is 100098959. The next prime is 100098991. The reversal of 100098989 is 989890001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71690089 + 28408900 = 8467^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 100098989 - 2¹² = 100094893 is a prime.

Together with 100098991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100098959) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50049494 + 50049495.

It is an arithmetic number, because the mean of its divisors is an integer number (50049495).

Almost surely, 2^100098989 is an apocalyptic number.

It is an amenable number.

100098989 is a deficient number, since it is larger than the sum of its proper divisors (1).

100098989 is an equidigital number, since it uses as much as digits as its factorization.

100098989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 100098989 is about 10004.9482257531. The cubic root of 100098989 is about 464.3119882657.

The spelling of 100098989 in words is "one hundred million, ninety-eight thousand, nine hundred eighty-nine".