9870853 has 2 divisors, whose sum is σ = 9870854. Its totient is φ = 9870852.

The previous prime is 9870851. The next prime is 9870859. The reversal of 9870853 is 3580789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7745089 + 2125764 = 2783^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 9870853 - 2¹ = 9870851 is a prime.

Together with 9870851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9870851) 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 as a sum of consecutive naturals, namely, 4935426 + 4935427.

It is an arithmetic number, because the mean of its divisors is an integer number (4935427).

Almost surely, 2^9870853 is an apocalyptic number.

It is an amenable number.

9870853 is a deficient number, since it is larger than the sum of its proper divisors (1).

9870853 is an equidigital number, since it uses as much as digits as its factorization.

9870853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 9870853 is about 3141.7913679937. The cubic root of 9870853 is about 214.5119848843.

Subtracting from 9870853 its reverse (3580789), we obtain a square (6290064 = 2508²).

The spelling of 9870853 in words is "nine million, eight hundred seventy thousand, eight hundred fifty-three".