9819898 has 16 divisors (see below), whose sum is σ = 16412544. Its totient is φ = 4368160.

The previous prime is 9819889. The next prime is 9819899. The reversal of 9819898 is 8989189.

It is not an unprimeable number, because it can be changed into a prime (9819899) 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, 3715 + ... + 5782.

It is an arithmetic number, because the mean of its divisors is an integer number (1025784).

Almost surely, 2^9819898 is an apocalyptic number.

9819898 is a deficient number, since it is larger than the sum of its proper divisors (6592646).

9819898 is a wasteful number, since it uses less digits than its factorization.

9819898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9557.

The product of its digits is 373248, while the sum is 52.

The square root of 9819898 is about 3133.6716484022. The cubic root of 9819898 is about 214.1422322870.

The spelling of 9819898 in words is "nine million, eight hundred nineteen thousand, eight hundred ninety-eight".