9947331159 has 24 divisors (see below), whose sum is σ = 14097710160. Its totient is φ = 6237686784.

The previous prime is 9947331139. The next prime is 9947331197. The reversal of 9947331159 is 9511337499.

It is not a de Polignac number, because 9947331159 - 2⁸ = 9947330903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947331109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2350057 + ... + 2354285.

It is an arithmetic number, because the mean of its divisors is an integer number (587404590).

Almost surely, 2^9947331159 is an apocalyptic number.

9947331159 is a deficient number, since it is larger than the sum of its proper divisors (4150379001).

9947331159 is a wasteful number, since it uses less digits than its factorization.

9947331159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979 (or 6962 counting only the distinct ones).

The product of its digits is 918540, while the sum is 51.

The square root of 9947331159 is about 99736.3081279832. The cubic root of 9947331159 is about 2150.6456441325.

The spelling of 9947331159 in words is "nine billion, nine hundred forty-seven million, three hundred thirty-one thousand, one hundred fifty-nine".