9803981 has 16 divisors (see below), whose sum is σ = 11457600. Its totient is φ = 8294400.

The previous prime is 9803953. The next prime is 9803987. The reversal of 9803981 is 1893089.

9803981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9803981 - 2¹⁸ = 9541837 is a prime.

It is a super-2 number, since 2×9803981² = 192236086896722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9803987) 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, 12365 + ... + 13133.

It is an arithmetic number, because the mean of its divisors is an integer number (716100).

Almost surely, 2^9803981 is an apocalyptic number.

It is an amenable number.

9803981 is a deficient number, since it is larger than the sum of its proper divisors (1653619).

9803981 is a wasteful number, since it uses less digits than its factorization.

9803981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 9803981 is about 3131.1309458405. The cubic root of 9803981 is about 214.0264691981.

The spelling of 9803981 in words is "nine million, eight hundred three thousand, nine hundred eighty-one".