871423433 has 4 divisors (see below), whose sum is σ = 871500420. Its totient is φ = 871346448.

The previous prime is 871423409. The next prime is 871423439. The reversal of 871423433 is 334324178.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 334324178 = 2 ⋅167162089.

It can be written as a sum of positive squares in 2 ways, for example, as 854217529 + 17205904 = 29227^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 871423433 - 2¹⁸ = 871161289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 871423393 and 871423402.

It is not an unprimeable number, because it can be changed into a prime (871423439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17810 + ... + 45387.

It is an arithmetic number, because the mean of its divisors is an integer number (217875105).

Almost surely, 2^871423433 is an apocalyptic number.

It is an amenable number.

871423433 is a deficient number, since it is larger than the sum of its proper divisors (76987).

871423433 is a wasteful number, since it uses less digits than its factorization.

871423433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76986.

The product of its digits is 48384, while the sum is 35.

The square root of 871423433 is about 29519.8819950216. The cubic root of 871423433 is about 955.1606257420.

The spelling of 871423433 in words is "eight hundred seventy-one million, four hundred twenty-three thousand, four hundred thirty-three".