9898545 has 16 divisors (see below), whose sum is σ = 16137792. Its totient is φ = 5179200.

The previous prime is 9898543. The next prime is 9898547. The reversal of 9898545 is 5458989.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9898543) and next prime (9898547).

It is not a de Polignac number, because 9898545 - 2¹ = 9898543 is a prime.

It is an Ulam number.

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

It is a Curzon number.

9898545 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9898494 and 9898503.

It is not an unprimeable number, because it can be changed into a prime (9898543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5431 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (1008612).

Almost surely, 2^9898545 is an apocalyptic number.

It is an amenable number.

9898545 is a deficient number, since it is larger than the sum of its proper divisors (6239247).

9898545 is a wasteful number, since it uses less digits than its factorization.

9898545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512.

The product of its digits is 518400, while the sum is 48.

The square root of 9898545 is about 3146.1953213366. The cubic root of 9898545 is about 214.7123971325.

The spelling of 9898545 in words is "nine million, eight hundred ninety-eight thousand, five hundred forty-five".