673439 has 4 divisors (see below), whose sum is σ = 725256. Its totient is φ = 621624.

The previous prime is 673429. The next prime is 673441. The reversal of 673439 is 934376.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673429) 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, 25889 + ... + 25914.

It is an arithmetic number, because the mean of its divisors is an integer number (181314).

2⁶⁷³⁴³⁹ is an apocalyptic number.

673439 is a deficient number, since it is larger than the sum of its proper divisors (51817).

673439 is a wasteful number, since it uses less digits than its factorization.

673439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51816.

The product of its digits is 13608, while the sum is 32.

The square root of 673439 is about 820.6332920373. The cubic root of 673439 is about 87.6528593354.

The spelling of 673439 in words is "six hundred seventy-three thousand, four hundred thirty-nine".