9944387 has 2 divisors, whose sum is σ = 9944388. Its totient is φ = 9944386.

The previous prime is 9944377. The next prime is 9944393. The reversal of 9944387 is 7834499.

It is a strong prime.

It is an emirp because it is prime and its reverse (7834499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9944387 - 2¹⁶ = 9878851 is a prime.

It is not a weakly prime, because it can be changed into another prime (9944317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972193 + 4972194.

It is an arithmetic number, because the mean of its divisors is an integer number (4972194).

Almost surely, 2^9944387 is an apocalyptic number.

9944387 is a deficient number, since it is larger than the sum of its proper divisors (1).

9944387 is an equidigital number, since it uses as much as digits as its factorization.

9944387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 9944387 is about 3153.4722132912. The cubic root of 9944387 is about 215.0433444250.

The spelling of 9944387 in words is "nine million, nine hundred forty-four thousand, three hundred eighty-seven".