9898945 has 8 divisors (see below), whose sum is σ = 13575744. Its totient is φ = 6787824.

The previous prime is 9898921. The next prime is 9898979. The reversal of 9898945 is 5498989.

9898945 = T₁₉₆ + T₁₉₇ + ... + T₄₀₅.

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

It is a cyclic number.

It is not a de Polignac number, because 9898945 - 2⁹ = 9898433 is a prime.

It is a super-2 number, since 2×9898945² = 195978224226050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 9898892 and 9898901.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 141379 + ... + 141448.

It is an arithmetic number, because the mean of its divisors is an integer number (1696968).

Almost surely, 2^9898945 is an apocalyptic number.

It is an amenable number.

9898945 is a deficient number, since it is larger than the sum of its proper divisors (3676799).

9898945 is a wasteful number, since it uses less digits than its factorization.

9898945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282839.

The product of its digits is 933120, while the sum is 52.

The square root of 9898945 is about 3146.2588895385. The cubic root of 9898945 is about 214.7152892681.

The spelling of 9898945 in words is "nine million, eight hundred ninety-eight thousand, nine hundred forty-five".