9947907 has 16 divisors (see below), whose sum is σ = 15605280. Its totient is φ = 6241536.

The previous prime is 9947867. The next prime is 9947923. The reversal of 9947907 is 7097499.

9947907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9947907 - 2⁷ = 9947779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9947947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10378 + ... + 11295.

It is an arithmetic number, because the mean of its divisors is an integer number (975330).

Almost surely, 2^9947907 is an apocalyptic number.

9947907 is a deficient number, since it is larger than the sum of its proper divisors (5657373).

9947907 is a wasteful number, since it uses less digits than its factorization.

9947907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21699 (or 21693 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 9947907 is about 3154.0302788654. The cubic root of 9947907 is about 215.0687142903.

The spelling of 9947907 in words is "nine million, nine hundred forty-seven thousand, nine hundred seven".