840196589 has 2 divisors, whose sum is σ = 840196590. Its totient is φ = 840196588.

The previous prime is 840196583. The next prime is 840196597. The reversal of 840196589 is 985691048.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711555625 + 128640964 = 26675^2 + 11342^2 .

It is a cyclic number.

It is not a de Polignac number, because 840196589 - 2²⁸ = 571761133 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 (840196583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420098294 + 420098295.

It is an arithmetic number, because the mean of its divisors is an integer number (420098295).

Almost surely, 2^840196589 is an apocalyptic number.

It is an amenable number.

840196589 is a deficient number, since it is larger than the sum of its proper divisors (1).

840196589 is an equidigital number, since it uses as much as digits as its factorization.

840196589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 840196589 is about 28986.1447764272. The cubic root of 840196589 is about 943.6123972061.

The spelling of 840196589 in words is "eight hundred forty million, one hundred ninety-six thousand, five hundred eighty-nine".