869853812 has 12 divisors (see below), whose sum is σ = 1522770816. Its totient is φ = 434776440.

The previous prime is 869853793. The next prime is 869853821. The reversal of 869853812 is 218358968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24068 + ... + 48155.

It is an arithmetic number, because the mean of its divisors is an integer number (126897568).

Almost surely, 2^869853812 is an apocalyptic number.

It is an amenable number.

869853812 is a deficient number, since it is larger than the sum of its proper divisors (652917004).

869853812 is a wasteful number, since it uses less digits than its factorization.

869853812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75238 (or 75236 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 869853812 is about 29493.2841847089. The cubic root of 869853812 is about 954.5867978443.

The spelling of 869853812 in words is "eight hundred sixty-nine million, eight hundred fifty-three thousand, eight hundred twelve".