109364989 has 2 divisors, whose sum is σ = 109364990. Its totient is φ = 109364988.

The previous prime is 109364987. The next prime is 109365001. The reversal of 109364989 is 989463901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77352025 + 32012964 = 8795^2 + 5658^2 .

It is a cyclic number.

It is not a de Polignac number, because 109364989 - 2¹ = 109364987 is a prime.

Together with 109364987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109364987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54682494 + 54682495.

It is an arithmetic number, because the mean of its divisors is an integer number (54682495).

Almost surely, 2^109364989 is an apocalyptic number.

It is an amenable number.

109364989 is a deficient number, since it is larger than the sum of its proper divisors (1).

109364989 is an equidigital number, since it uses as much as digits as its factorization.

109364989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 109364989 is about 10457.7717033793. The cubic root of 109364989 is about 478.2182045020.

The spelling of 109364989 in words is "one hundred nine million, three hundred sixty-four thousand, nine hundred eighty-nine".