140706589 has 2 divisors, whose sum is σ = 140706590. Its totient is φ = 140706588.

The previous prime is 140706581. The next prime is 140706619. The reversal of 140706589 is 985607041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140422500 + 284089 = 11850^2 + 533^2 .

It is an emirp because it is prime and its reverse (985607041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140706589 - 2³ = 140706581 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 (140706581) 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, 70353294 + 70353295.

It is an arithmetic number, because the mean of its divisors is an integer number (70353295).

Almost surely, 2^140706589 is an apocalyptic number.

It is an amenable number.

140706589 is a deficient number, since it is larger than the sum of its proper divisors (1).

140706589 is an equidigital number, since it uses as much as digits as its factorization.

140706589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 140706589 is about 11861.9808210939. The cubic root of 140706589 is about 520.1215063692.

The spelling of 140706589 in words is "one hundred forty million, seven hundred six thousand, five hundred eighty-nine".