873449281 has 12 divisors (see below), whose sum is σ = 899578300. Its totient is φ = 848050560.

The previous prime is 873449261. The next prime is 873449321. The reversal of 873449281 is 182944378.

It can be written as a sum of positive squares in 6 ways, for example, as 272415025 + 601034256 = 16505^2 + 24516^2 .

It is not a de Polignac number, because 873449281 - 2⁵ = 873449249 is a prime.

It is a super-2 number, since 2×873449281² = 1525827292958833922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (873449261) 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, 383815 + ... + 386083.

Almost surely, 2^873449281 is an apocalyptic number.

It is an amenable number.

873449281 is a deficient number, since it is larger than the sum of its proper divisors (26129019).

873449281 is a wasteful number, since it uses less digits than its factorization.

873449281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580 (or 2539 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 873449281 is about 29554.1753564534. The cubic root of 873449281 is about 955.9002251252.

The spelling of 873449281 in words is "eight hundred seventy-three million, four hundred forty-nine thousand, two hundred eighty-one".