9645444 has 18 divisors (see below), whose sum is σ = 24381630. Its totient is φ = 3215136.

The previous prime is 9645437. The next prime is 9645451. The reversal of 9645444 is 4445469.

9645444 is a `hidden beast` number, since 9 + 645 + 4 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (9645437) and next prime (9645451).

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 97344 = 3090^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 267929 = 9645444 / (9 + 6 + 4 + 5 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 9645399 and 9645408.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133929 + ... + 134000.

It is an arithmetic number, because the mean of its divisors is an integer number (1354535).

Almost surely, 2^9645444 is an apocalyptic number.

It is an amenable number.

9645444 is an abundant number, since it is smaller than the sum of its proper divisors (14736186).

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

9645444 is a wasteful number, since it uses less digits than its factorization.

9645444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267939 (or 267934 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 9645444 is about 3105.7115126811. The cubic root of 9645444 is about 212.8665433913.

The spelling of 9645444 in words is "nine million, six hundred forty-five thousand, four hundred forty-four".