9944215 has 4 divisors (see below), whose sum is σ = 11933064. Its totient is φ = 7955368.

The previous prime is 9944197. The next prime is 9944251. The reversal of 9944215 is 5124499.

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

It is a cyclic number.

It is not a de Polignac number, because 9944215 - 2¹¹ = 9942167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994417 + ... + 994426.

It is an arithmetic number, because the mean of its divisors is an integer number (2983266).

Almost surely, 2^9944215 is an apocalyptic number.

9944215 is a deficient number, since it is larger than the sum of its proper divisors (1988849).

9944215 is a wasteful number, since it uses less digits than its factorization.

9944215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988848.

The product of its digits is 12960, while the sum is 34.

The square root of 9944215 is about 3153.4449416472. Note that the first 3 decimals coincide. The cubic root of 9944215 is about 215.0421046077.

The spelling of 9944215 in words is "nine million, nine hundred forty-four thousand, two hundred fifteen".