109857589 has 2 divisors, whose sum is σ = 109857590. Its totient is φ = 109857588.

The previous prime is 109857581. The next prime is 109857623. The reversal of 109857589 is 985758901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109307025 + 550564 = 10455^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 109857589 - 2³ = 109857581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109857581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54928794 + 54928795.

It is an arithmetic number, because the mean of its divisors is an integer number (54928795).

Almost surely, 2^109857589 is an apocalyptic number.

It is an amenable number.

109857589 is a deficient number, since it is larger than the sum of its proper divisors (1).

109857589 is an equidigital number, since it uses as much as digits as its factorization.

109857589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 109857589 is about 10481.2971048435. The cubic root of 109857589 is about 478.9351234115.

The spelling of 109857589 in words is "one hundred nine million, eight hundred fifty-seven thousand, five hundred eighty-nine".