9898805 has 16 divisors (see below), whose sum is σ = 13672704. Its totient is φ = 6739200.

The previous prime is 9898799. The next prime is 9898807. The reversal of 9898805 is 5088989.

It is a happy number.

9898805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-9898805 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9898805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9898807) 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, 4349 + ... + 6221.

It is an arithmetic number, because the mean of its divisors is an integer number (854544).

Almost surely, 2^9898805 is an apocalyptic number.

It is an amenable number.

9898805 is a deficient number, since it is larger than the sum of its proper divisors (3773899).

9898805 is a wasteful number, since it uses less digits than its factorization.

9898805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 9898805 is about 3146.2366408139. The cubic root of 9898805 is about 214.7142770295.

The spelling of 9898805 in words is "nine million, eight hundred ninety-eight thousand, eight hundred five".