869485812 has 48 divisors (see below), whose sum is σ = 2186739072. Its totient is φ = 267304320.

The previous prime is 869485807. The next prime is 869485817. The reversal of 869485812 is 218584968.

It is an interprime number because it is at equal distance from previous prime (869485807) and next prime (869485817).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869485817) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 310137 + ... + 312927.

It is an arithmetic number, because the mean of its divisors is an integer number (45557064).

Almost surely, 2^869485812 is an apocalyptic number.

It is an amenable number.

869485812 is an abundant number, since it is smaller than the sum of its proper divisors (1317253260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869485812 is a wasteful number, since it uses less digits than its factorization.

869485812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808 (or 4806 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 51.

The square root of 869485812 is about 29487.0448163257. The cubic root of 869485812 is about 954.4521631555.

The spelling of 869485812 in words is "eight hundred sixty-nine million, four hundred eighty-five thousand, eight hundred twelve".