9938819 has 6 divisors (see below), whose sum is σ = 10924620. Its totient is φ = 9035180.

The previous prime is 9938813. The next prime is 9938821. The reversal of 9938819 is 9188399.

9938819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9938819 - 2⁸ = 9938563 is a prime.

It is a super-2 number, since 2×9938819² = 197560246229522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9938813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40949 + ... + 41190.

It is an arithmetic number, because the mean of its divisors is an integer number (1820770).

Almost surely, 2^9938819 is an apocalyptic number.

9938819 is a deficient number, since it is larger than the sum of its proper divisors (985801).

9938819 is a wasteful number, since it uses less digits than its factorization.

9938819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82161 (or 82150 counting only the distinct ones).

The product of its digits is 139968, while the sum is 47.

The square root of 9938819 is about 3152.5892532964. The cubic root of 9938819 is about 215.0032016830.

The spelling of 9938819 in words is "nine million, nine hundred thirty-eight thousand, eight hundred nineteen".