875982409 has 9 divisors (see below), whose sum is σ = 931076661. Its totient is φ = 823980480.

The previous prime is 875982377. The next prime is 875982421. The reversal of 875982409 is 904289578.

The square root of 875982409 is 29597.

It is a perfect power (a square), and thus also a powerful number.

875982409 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 4 ways, for example, as 169911225 + 706071184 = 13035^2 + 26572^2 .

It is not a de Polignac number, because 875982409 - 2⁵ = 875982377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (875982449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 502279 + ... + 504019.

Almost surely, 2^875982409 is an apocalyptic number.

875982409 is the 29597-th square number.

875982409 is the 14799-th centered octagonal number.

It is an amenable number.

875982409 is a deficient number, since it is larger than the sum of its proper divisors (55094252).

875982409 is an frugal number, since it uses more digits than its factorization.

875982409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The cubic root of 875982409 is about 956.8234157530.

The spelling of 875982409 in words is "eight hundred seventy-five million, nine hundred eighty-two thousand, four hundred nine".