9964445 has 4 divisors (see below), whose sum is σ = 11957340. Its totient is φ = 7971552.

The previous prime is 9964439. The next prime is 9964463. The reversal of 9964445 is 5444699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6497401 + 3467044 = 2549^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 9964445 - 2¹⁴ = 9948061 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 996440 + ... + 996449.

It is an arithmetic number, because the mean of its divisors is an integer number (2989335).

Almost surely, 2^9964445 is an apocalyptic number.

It is an amenable number.

9964445 is a deficient number, since it is larger than the sum of its proper divisors (1992895).

9964445 is a wasteful number, since it uses less digits than its factorization.

9964445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992894.

The product of its digits is 155520, while the sum is 41.

The square root of 9964445 is about 3156.6509151314. The cubic root of 9964445 is about 215.1878293698.

The spelling of 9964445 in words is "nine million, nine hundred sixty-four thousand, four hundred forty-five".