872855433 has 20 divisors (see below), whose sum is σ = 1316817348. Its totient is φ = 576136800.

The previous prime is 872855371. The next prime is 872855441. The reversal of 872855433 is 334558278.

872855433 is a `hidden beast` number, since 87 + 28 + 5 + 543 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 684973584 + 187881849 = 26172^2 + 13707^2 .

It is not a de Polignac number, because 872855433 - 2⁸ = 872855177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (872855443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45166 + ... + 61527.

Almost surely, 2^872855433 is an apocalyptic number.

It is an amenable number.

872855433 is a deficient number, since it is larger than the sum of its proper divisors (443961915).

872855433 is a wasteful number, since it uses less digits than its factorization.

872855433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106806 (or 106797 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 872855433 is about 29544.1268782816. The cubic root of 872855433 is about 955.6835408650.

The spelling of 872855433 in words is "eight hundred seventy-two million, eight hundred fifty-five thousand, four hundred thirty-three".