9803861 has 4 divisors (see below), whose sum is σ = 9839532. Its totient is φ = 9768192.

The previous prime is 9803813. The next prime is 9803863. The reversal of 9803861 is 1683089.

9803861 is nontrivially palindromic in base 13.

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 6599761 + 3204100 = 2569^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 9803861 - 2¹⁸ = 9541717 is a prime.

It is a super-2 number, since 2×9803861² = 192231381014642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9803863) 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, 17420 + ... + 17973.

It is an arithmetic number, because the mean of its divisors is an integer number (2459883).

Almost surely, 2^9803861 is an apocalyptic number.

It is an amenable number.

9803861 is a deficient number, since it is larger than the sum of its proper divisors (35671).

9803861 is a wasteful number, since it uses less digits than its factorization.

9803861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35670.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 9803861 is about 3131.1117833766. Note that the first 3 decimals coincide. The cubic root of 9803861 is about 214.0255959718.

The spelling of 9803861 in words is "nine million, eight hundred three thousand, eight hundred sixty-one".