9867144 has 32 divisors (see below), whose sum is σ = 28192320. Its totient is φ = 2819136.

The previous prime is 9867119. The next prime is 9867149. The reversal of 9867144 is 4417689.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9867149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29199 + ... + 29534.

It is an arithmetic number, because the mean of its divisors is an integer number (881010).

Almost surely, 2^9867144 is an apocalyptic number.

It is an amenable number.

9867144 is an abundant number, since it is smaller than the sum of its proper divisors (18325176).

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

9867144 is a wasteful number, since it uses less digits than its factorization.

9867144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58749 (or 58745 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 9867144 is about 3141.2010441868. The cubic root of 9867144 is about 214.4851136968.

It can be divided in two parts, 9867 and 144, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 9867144 in words is "nine million, eight hundred sixty-seven thousand, one hundred forty-four".