9967144 has 32 divisors (see below), whose sum is σ = 20528640. Its totient is φ = 4499200.

The previous prime is 9967129. The next prime is 9967147. The reversal of 9967144 is 4417699.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9967097 and 9967106.

It is not an unprimeable number, because it can be changed into a prime (9967147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16512 + ... + 17104.

It is an arithmetic number, because the mean of its divisors is an integer number (641520).

Almost surely, 2^9967144 is an apocalyptic number.

It is an amenable number.

9967144 is an abundant number, since it is smaller than the sum of its proper divisors (10561496).

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

9967144 is a wasteful number, since it uses less digits than its factorization.

9967144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 797 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 9967144 is about 3157.0783962392. The cubic root of 9967144 is about 215.2072564267.

The spelling of 9967144 in words is "nine million, nine hundred sixty-seven thousand, one hundred forty-four".