875638449 has 24 divisors (see below), whose sum is σ = 1463804160. Its totient is φ = 494028288.

The previous prime is 875638433. The next prime is 875638481. The reversal of 875638449 is 944836578.

It is not a de Polignac number, because 875638449 - 2⁴ = 875638433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 875638395 and 875638404.

It is not an unprimeable number, because it can be changed into a prime (875630449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82992 + ... + 92945.

It is an arithmetic number, because the mean of its divisors is an integer number (60991840).

Almost surely, 2^875638449 is an apocalyptic number.

It is an amenable number.

875638449 is a deficient number, since it is larger than the sum of its proper divisors (588165711).

875638449 is a wasteful number, since it uses less digits than its factorization.

875638449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176029 (or 176026 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 875638449 is about 29591.1887054238. The cubic root of 875638449 is about 956.6981651149.

The spelling of 875638449 in words is "eight hundred seventy-five million, six hundred thirty-eight thousand, four hundred forty-nine".