9898505 has 16 divisors (see below), whose sum is σ = 12712464. Its totient is φ = 7372800.

The previous prime is 9898481. The next prime is 9898519. The reversal of 9898505 is 5058989.

It can be written as a sum of positive squares in 8 ways, for example, as 2483776 + 7414729 = 1576^2 + 2723^2 .

It is not a de Polignac number, because 9898505 - 2²² = 5704201 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8009 + ... + 9161.

It is an arithmetic number, because the mean of its divisors is an integer number (794529).

Almost surely, 2^9898505 is an apocalyptic number.

It is an amenable number.

9898505 is a deficient number, since it is larger than the sum of its proper divisors (2813959).

9898505 is a wasteful number, since it uses less digits than its factorization.

9898505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 129600, while the sum is 44.

The square root of 9898505 is about 3146.1889644457. The cubic root of 9898505 is about 214.7121079147.

The spelling of 9898505 in words is "nine million, eight hundred ninety-eight thousand, five hundred five".