9930819 has 8 divisors (see below), whose sum is σ = 13668352. Its totient is φ = 6406920.

The previous prime is 9930797. The next prime is 9930827. The reversal of 9930819 is 9180399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9930819 - 2⁷ = 9930691 is a prime.

It is a super-2 number, since 2×9930819² = 197242332021522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9930829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53299 + ... + 53484.

It is an arithmetic number, because the mean of its divisors is an integer number (1708544).

Almost surely, 2^9930819 is an apocalyptic number.

9930819 is a deficient number, since it is larger than the sum of its proper divisors (3737533).

9930819 is a wasteful number, since it uses less digits than its factorization.

9930819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106817.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 9930819 is about 3151.3201995354. The cubic root of 9930819 is about 214.9454990754.

The spelling of 9930819 in words is "nine million, nine hundred thirty thousand, eight hundred nineteen".