9889743427 has 8 divisors (see below), whose sum is σ = 9903928320. Its totient is φ = 9875571720.

The previous prime is 9889743403. The next prime is 9889743439. The reversal of 9889743427 is 7243479889.

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-9889743427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9889749427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701302 + ... + 3703972.

It is an arithmetic number, because the mean of its divisors is an integer number (1237991040).

Almost surely, 2^9889743427 is an apocalyptic number.

9889743427 is a deficient number, since it is larger than the sum of its proper divisors (14184893).

9889743427 is a wasteful number, since it uses less digits than its factorization.

9889743427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593.

The product of its digits is 24385536, while the sum is 61.

The square root of 9889743427 is about 99447.1891357418. The cubic root of 9889743427 is about 2146.4873904810.

The spelling of 9889743427 in words is "nine billion, eight hundred eighty-nine million, seven hundred forty-three thousand, four hundred twenty-seven".