9800851 has 4 divisors (see below), whose sum is σ = 9821304. Its totient is φ = 9780400.

The previous prime is 9800839. The next prime is 9800873. The reversal of 9800851 is 1580089.

9800851 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 is a cyclic number.

It is not a de Polignac number, because 9800851 - 2¹³ = 9792659 is a prime.

It is an Ulam number.

It is a Duffinian number.

9800851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9800801) by changing a digit.

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, 9490 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (2455326).

Almost surely, 2^9800851 is an apocalyptic number.

9800851 is a deficient number, since it is larger than the sum of its proper divisors (20453).

9800851 is a wasteful number, since it uses less digits than its factorization.

9800851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20452.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 9800851 is about 3130.6310865383. The cubic root of 9800851 is about 214.0036902150.

The spelling of 9800851 in words is "nine million, eight hundred thousand, eight hundred fifty-one".