9945445 has 8 divisors (see below), whose sum is σ = 12008736. Its totient is φ = 7906896.

The previous prime is 9945443. The next prime is 9945449. The reversal of 9945445 is 5445499.

9945445 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9945445 - 2¹ = 9945443 is a prime.

It is a Duffinian number.

9945445 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9945398 and 9945407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945443) 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, 5287 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (1501092).

Almost surely, 2^9945445 is an apocalyptic number.

It is an amenable number.

9945445 is a deficient number, since it is larger than the sum of its proper divisors (2063291).

9945445 is a wasteful number, since it uses less digits than its factorization.

9945445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371.

The product of its digits is 129600, while the sum is 40.

The square root of 9945445 is about 3153.6399604267. The cubic root of 9945445 is about 215.0509704285.

It can be divided in two parts, 99454 and 45, that added together give a palindrome (99499).

The spelling of 9945445 in words is "nine million, nine hundred forty-five thousand, four hundred forty-five".