673428489 has 4 divisors (see below), whose sum is σ = 897904656. Its totient is φ = 448952324.

The previous prime is 673428479. The next prime is 673428491. The reversal of 673428489 is 984824376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673428489 - 2⁴ = 673428473 is a prime.

It is a super-4 number, since 4×673428489⁴ (a number of 36 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (673428409) 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 in 3 ways as a sum of consecutive naturals, for example, 112238079 + ... + 112238084.

It is an arithmetic number, because the mean of its divisors is an integer number (224476164).

Almost surely, 2^673428489 is an apocalyptic number.

It is an amenable number.

673428489 is a deficient number, since it is larger than the sum of its proper divisors (224476167).

673428489 is a wasteful number, since it uses less digits than its factorization.

673428489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224476166.

The product of its digits is 2322432, while the sum is 51.

The square root of 673428489 is about 25950.5007466137. The cubic root of 673428489 is about 876.5240330595.

The spelling of 673428489 in words is "six hundred seventy-three million, four hundred twenty-eight thousand, four hundred eighty-nine".