871423438 has 4 divisors (see below), whose sum is σ = 1307135160. Its totient is φ = 435711718.

The previous prime is 871423409. The next prime is 871423439. The reversal of 871423438 is 834324178.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 871423438.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217855858 + ... + 217855861.

It is an arithmetic number, because the mean of its divisors is an integer number (326783790).

Almost surely, 2^871423438 is an apocalyptic number.

871423438 is a deficient number, since it is larger than the sum of its proper divisors (435711722).

871423438 is a wasteful number, since it uses less digits than its factorization.

871423438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435711721.

The product of its digits is 129024, while the sum is 40.

The square root of 871423438 is about 29519.8820797103. The cubic root of 871423438 is about 955.1606275688.

The spelling of 871423438 in words is "eight hundred seventy-one million, four hundred twenty-three thousand, four hundred thirty-eight".