9947070709 has 4 divisors (see below), whose sum is σ = 9947526316. Its totient is φ = 9946615104.

The previous prime is 9947070701. The next prime is 9947070733. The reversal of 9947070709 is 9070707499.

9947070709 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8153548209 + 1793522500 = 90297^2 + 42350^2 .

It is a cyclic number.

It is not a de Polignac number, because 9947070709 - 2³ = 9947070701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947070701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193314 + ... + 239299.

It is an arithmetic number, because the mean of its divisors is an integer number (2486881579).

Almost surely, 2^9947070709 is an apocalyptic number.

It is an amenable number.

9947070709 is a deficient number, since it is larger than the sum of its proper divisors (455607).

9947070709 is a wasteful number, since it uses less digits than its factorization.

9947070709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455606.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The square root of 9947070709 is about 99735.0024264300. The cubic root of 9947070709 is about 2150.6268739204.

The spelling of 9947070709 in words is "nine billion, nine hundred forty-seven million, seventy thousand, seven hundred nine".