673443959 has 2 divisors, whose sum is σ = 673443960. Its totient is φ = 673443958.

The previous prime is 673443931. The next prime is 673444021. The reversal of 673443959 is 959344376.

673443959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673443959 - 2¹⁶ = 673378423 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 (673443259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336721979 + 336721980.

It is an arithmetic number, because the mean of its divisors is an integer number (336721980).

Almost surely, 2^673443959 is an apocalyptic number.

673443959 is a deficient number, since it is larger than the sum of its proper divisors (1).

673443959 is an equidigital number, since it uses as much as digits as its factorization.

673443959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 50.

The square root of 673443959 is about 25950.7988123680. The cubic root of 673443959 is about 876.5307448452.

The spelling of 673443959 in words is "six hundred seventy-three million, four hundred forty-three thousand, nine hundred fifty-nine".