846326489 has 2 divisors, whose sum is σ = 846326490. Its totient is φ = 846326488.

The previous prime is 846326479. The next prime is 846326491. The reversal of 846326489 is 984623648.

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., 828979264 + 17347225 = 28792^2 + 4165^2 .

It is a cyclic number.

It is not a de Polignac number, because 846326489 - 2⁸ = 846326233 is a prime.

Together with 846326491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (846326479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423163244 + 423163245.

It is an arithmetic number, because the mean of its divisors is an integer number (423163245).

Almost surely, 2^846326489 is an apocalyptic number.

It is an amenable number.

846326489 is a deficient number, since it is larger than the sum of its proper divisors (1).

846326489 is an equidigital number, since it uses as much as digits as its factorization.

846326489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 50.

The square root of 846326489 is about 29091.6910646322. The cubic root of 846326489 is about 945.9016390155.

The spelling of 846326489 in words is "eight hundred forty-six million, three hundred twenty-six thousand, four hundred eighty-nine".