871962485 has 4 divisors (see below), whose sum is σ = 1046354988. Its totient is φ = 697569984.

The previous prime is 871962449. The next prime is 871962523. The reversal of 871962485 is 584269178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584269178 = 2 ⋅292134589.

It can be written as a sum of positive squares in 2 ways, for example, as 442934116 + 429028369 = 21046^2 + 20713^2 .

It is a cyclic number.

It is not a de Polignac number, because 871962485 - 2⁸ = 871962229 is a prime.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 87196244 + ... + 87196253.

It is an arithmetic number, because the mean of its divisors is an integer number (261588747).

Almost surely, 2^871962485 is an apocalyptic number.

It is an amenable number.

871962485 is a deficient number, since it is larger than the sum of its proper divisors (174392503).

871962485 is a wasteful number, since it uses less digits than its factorization.

871962485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174392502.

The product of its digits is 967680, while the sum is 50.

The square root of 871962485 is about 29529.0109045325. The cubic root of 871962485 is about 955.3575354173.

The spelling of 871962485 in words is "eight hundred seventy-one million, nine hundred sixty-two thousand, four hundred eighty-five".