9898919 has 4 divisors (see below), whose sum is σ = 9905496. Its totient is φ = 9892344.

The previous prime is 9898907. The next prime is 9898921. The reversal of 9898919 is 9198989.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9898919 - 2²⁰ = 8850343 is a prime.

It is a super-2 number, since 2×9898919² = 195977194737122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9898979) 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 3 ways as a sum of consecutive naturals, for example, 212 + ... + 4454.

It is an arithmetic number, because the mean of its divisors is an integer number (2476374).

Almost surely, 2^9898919 is an apocalyptic number.

9898919 is a deficient number, since it is larger than the sum of its proper divisors (6577).

9898919 is a wasteful number, since it uses less digits than its factorization.

9898919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576.

The product of its digits is 419904, while the sum is 53.

The square root of 9898919 is about 3146.2547576444. The cubic root of 9898919 is about 214.7151012816.

The spelling of 9898919 in words is "nine million, eight hundred ninety-eight thousand, nine hundred nineteen".