869540166 has 24 divisors (see below), whose sum is σ = 2055277224. Its totient is φ = 263496960.

The previous prime is 869540159. The next prime is 869540167. The reversal of 869540166 is 661045968.

It is a super-2 number, since 2×869540166² = 1512200200574615112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869540167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2195611 + ... + 2196006.

It is an arithmetic number, because the mean of its divisors is an integer number (85636551).

Almost surely, 2^869540166 is an apocalyptic number.

869540166 is an abundant number, since it is smaller than the sum of its proper divisors (1185737058).

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

869540166 is a wasteful number, since it uses less digits than its factorization.

869540166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391636 (or 4391633 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 869540166 is about 29487.9664609142. The cubic root of 869540166 is about 954.4720512362.

The spelling of 869540166 in words is "eight hundred sixty-nine million, five hundred forty thousand, one hundred sixty-six".