869135912 has 16 divisors (see below), whose sum is σ = 1630382100. Its totient is φ = 434367360.

The previous prime is 869135899. The next prime is 869135929. The reversal of 869135912 is 219531968.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 866360356 + 2775556 = 29434^2 + 1666^2 .

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, 5789 + ... + 42092.

Almost surely, 2^869135912 is an apocalyptic number.

It is an amenable number.

869135912 is a deficient number, since it is larger than the sum of its proper divisors (761246188).

869135912 is a wasteful number, since it uses less digits than its factorization.

869135912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50156 (or 50152 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 869135912 is about 29481.1111052484. Note that the first 4 decimals coincide. The cubic root of 869135912 is about 954.3241152084.

The spelling of 869135912 in words is "eight hundred sixty-nine million, one hundred thirty-five thousand, nine hundred twelve".