673129449 has 12 divisors (see below), whose sum is σ = 988238212. Its totient is φ = 441396000.

The previous prime is 673129421. The next prime is 673129451. The reversal of 673129449 is 944921376.

It is a happy number.

673129449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59675625 + 613453824 = 7725^2 + 24768^2 .

It is not a de Polignac number, because 673129449 - 2⁵ = 673129417 is a prime.

It is a super-3 number, since 3×673129449³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (673129409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612502 + ... + 613599.

Almost surely, 2^673129449 is an apocalyptic number.

It is an amenable number.

673129449 is a deficient number, since it is larger than the sum of its proper divisors (315108763).

673129449 is a wasteful number, since it uses less digits than its factorization.

673129449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226168 (or 1226165 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 673129449 is about 25944.7383683089. The cubic root of 673129449 is about 876.3942719150.

The spelling of 673129449 in words is "six hundred seventy-three million, one hundred twenty-nine thousand, four hundred forty-nine".