9743981 has 8 divisors (see below), whose sum is σ = 10518144. Its totient is φ = 8973360.

The previous prime is 9743963. The next prime is 9743989. The reversal of 9743981 is 1893479.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9743981 is a prime.

It is a super-2 number, since 2×9743981² = 189890331456722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9743989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8936 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (1314768).

Almost surely, 2^9743981 is an apocalyptic number.

It is an amenable number.

9743981 is a deficient number, since it is larger than the sum of its proper divisors (774163).

9743981 is a wasteful number, since it uses less digits than its factorization.

9743981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its digits is 54432, while the sum is 41.

The square root of 9743981 is about 3121.5350390473. The cubic root of 9743981 is about 213.5889641252.

The spelling of 9743981 in words is "nine million, seven hundred forty-three thousand, nine hundred eighty-one".