871973854 has 4 divisors (see below), whose sum is σ = 1307960784. Its totient is φ = 435986926.

The previous prime is 871973849. The next prime is 871973863. The reversal of 871973854 is 458379178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 458379178 = 2 ⋅229189589.

It is a super-2 number, since 2×871973854² = 1520676804119226632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 217993462 + ... + 217993465.

It is an arithmetic number, because the mean of its divisors is an integer number (326990196).

Almost surely, 2^871973854 is an apocalyptic number.

871973854 is a deficient number, since it is larger than the sum of its proper divisors (435986930).

871973854 is a wasteful number, since it uses less digits than its factorization.

871973854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435986929.

The product of its digits is 1693440, while the sum is 52.

The square root of 871973854 is about 29529.2034095063. The cubic root of 871973854 is about 955.3616875120.

The spelling of 871973854 in words is "eight hundred seventy-one million, nine hundred seventy-three thousand, eight hundred fifty-four".