9944839 has 2 divisors, whose sum is σ = 9944840. Its totient is φ = 9944838.

The previous prime is 9944821. The next prime is 9944843. The reversal of 9944839 is 9384499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9944839 - 2⁵ = 9944807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9944849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972419 + 4972420.

It is an arithmetic number, because the mean of its divisors is an integer number (4972420).

Almost surely, 2^9944839 is an apocalyptic number.

9944839 is a deficient number, since it is larger than the sum of its proper divisors (1).

9944839 is an equidigital number, since it uses as much as digits as its factorization.

9944839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 9944839 is about 3153.5438795108. The cubic root of 9944839 is about 215.0466024813.

The spelling of 9944839 in words is "nine million, nine hundred forty-four thousand, eight hundred thirty-nine".