673388889 has 8 divisors (see below), whose sum is σ = 913069920. Its totient is φ = 441316896.

The previous prime is 673388867. The next prime is 673388897. The reversal of 673388889 is 988883376.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 673388889 - 2²⁰ = 672340313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673388189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902052 + ... + 1902405.

It is an arithmetic number, because the mean of its divisors is an integer number (114133740).

Almost surely, 2^673388889 is an apocalyptic number.

It is an amenable number.

673388889 is a deficient number, since it is larger than the sum of its proper divisors (239681031).

673388889 is a wasteful number, since it uses less digits than its factorization.

673388889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804519.

The product of its digits is 13934592, while the sum is 60.

The square root of 673388889 is about 25949.7377443395. The cubic root of 673388889 is about 876.5068518084.

The spelling of 673388889 in words is "six hundred seventy-three million, three hundred eighty-eight thousand, eight hundred eighty-nine".