9930857 has 4 divisors (see below), whose sum is σ = 9940560. Its totient is φ = 9921156.

The previous prime is 9930829. The next prime is 9930889. The reversal of 9930857 is 7580399.

9930857 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7580399 = 31 ⋅244529.

It is a cyclic number.

It is not a de Polignac number, because 9930857 - 2¹⁰ = 9929833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9930827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3107 + ... + 5432.

It is an arithmetic number, because the mean of its divisors is an integer number (2485140).

Almost surely, 2^9930857 is an apocalyptic number.

It is an amenable number.

9930857 is a deficient number, since it is larger than the sum of its proper divisors (9703).

9930857 is a wasteful number, since it uses less digits than its factorization.

9930857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 9930857 is about 3151.3262287488. The cubic root of 9930857 is about 214.9457732361.

The spelling of 9930857 in words is "nine million, nine hundred thirty thousand, eight hundred fifty-seven".