9947407 has 2 divisors, whose sum is σ = 9947408. Its totient is φ = 9947406.

The previous prime is 9947383. The next prime is 9947417. The reversal of 9947407 is 7047499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9947407 - 2¹¹ = 9945359 is a prime.

9947407 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9947407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9947417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973703 + 4973704.

It is an arithmetic number, because the mean of its divisors is an integer number (4973704).

Almost surely, 2^9947407 is an apocalyptic number.

9947407 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947407 is an equidigital number, since it uses as much as digits as its factorization.

9947407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 9947407 is about 3153.9510142042. The cubic root of 9947407 is about 215.0651109810.

The spelling of 9947407 in words is "nine million, nine hundred forty-seven thousand, four hundred seven".