9139866 has 8 divisors (see below), whose sum is σ = 18279744. Its totient is φ = 3046620.

The previous prime is 9139861. The next prime is 9139873. The reversal of 9139866 is 6689319.

It is a sphenic number, since it is the product of 3 distinct primes.

9139866 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9139861) 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 3 ways as a sum of consecutive naturals, for example, 761650 + ... + 761661.

It is an arithmetic number, because the mean of its divisors is an integer number (2284968).

Almost surely, 2^9139866 is an apocalyptic number.

9139866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9139866 is a wasteful number, since it uses less digits than its factorization.

9139866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523316.

The product of its digits is 69984, while the sum is 42.

The square root of 9139866 is about 3023.2211298547. The cubic root of 9139866 is about 209.0803778049.

The spelling of 9139866 in words is "nine million, one hundred thirty-nine thousand, eight hundred sixty-six".