9947407329 has 12 divisors (see below), whose sum is σ = 14383566756. Its totient is φ = 6624640512.

The previous prime is 9947407187. The next prime is 9947407367. The reversal of 9947407329 is 9237047499.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1195430625 + 8751976704 = 34575^2 + 93552^2 .

It is not a de Polignac number, because 9947407329 - 2¹⁷ = 9947276257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9947407429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571312 + ... + 588465.

It is an arithmetic number, because the mean of its divisors is an integer number (1198630563).

Almost surely, 2^9947407329 is an apocalyptic number.

It is an amenable number.

9947407329 is a deficient number, since it is larger than the sum of its proper divisors (4436159427).

9947407329 is a wasteful number, since it uses less digits than its factorization.

9947407329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160736 (or 1160733 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The square root of 9947407329 is about 99736.6899841778. The cubic root of 9947407329 is about 2150.6511335198.

The spelling of 9947407329 in words is "nine billion, nine hundred forty-seven million, four hundred seven thousand, three hundred twenty-nine".