9898705 has 4 divisors (see below), whose sum is σ = 11878452. Its totient is φ = 7918960.

The previous prime is 9898697. The next prime is 9898711. The reversal of 9898705 is 5078989.

9898705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2259009 + 7639696 = 1503^2 + 2764^2 .

It is not a de Polignac number, because 9898705 - 2³ = 9898697 is a prime.

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

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 989866 + ... + 989875.

It is an arithmetic number, because the mean of its divisors is an integer number (2969613).

Almost surely, 2^9898705 is an apocalyptic number.

It is an amenable number.

9898705 is a deficient number, since it is larger than the sum of its proper divisors (1979747).

9898705 is a wasteful number, since it uses less digits than its factorization.

9898705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979746.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 9898705 is about 3146.2207487715. The cubic root of 9898705 is about 214.7135539961.

The spelling of 9898705 in words is "nine million, eight hundred ninety-eight thousand, seven hundred five".