9961144 has 16 divisors (see below), whose sum is σ = 18774000. Its totient is φ = 4954752.

The previous prime is 9961141. The next prime is 9961151. The reversal of 9961144 is 4411699.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537 + ... + 4720.

It is an arithmetic number, because the mean of its divisors is an integer number (1173375).

Almost surely, 2^9961144 is an apocalyptic number.

It is an amenable number.

9961144 is a deficient number, since it is larger than the sum of its proper divisors (8812856).

9961144 is a wasteful number, since it uses less digits than its factorization.

9961144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462 (or 6458 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 9961144 is about 3156.1280075434. The cubic root of 9961144 is about 215.1640644242.

The spelling of 9961144 in words is "nine million, nine hundred sixty-one thousand, one hundred forty-four".