108000989 has 2 divisors, whose sum is σ = 108000990. Its totient is φ = 108000988.

The previous prime is 108000947. The next prime is 108001001. The reversal of 108000989 is 989000801.

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., 54096025 + 53904964 = 7355^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 108000989 - 2⁸ = 108000733 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108000289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54000494 + 54000495.

It is an arithmetic number, because the mean of its divisors is an integer number (54000495).

Almost surely, 2^108000989 is an apocalyptic number.

It is an amenable number.

108000989 is a deficient number, since it is larger than the sum of its proper divisors (1).

108000989 is an equidigital number, since it uses as much as digits as its factorization.

108000989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 108000989 is about 10392.3524285890. The cubic root of 108000989 is about 476.2217692338.

The spelling of 108000989 in words is "one hundred eight million, nine hundred eighty-nine", and thus it is an aban number.