9947429 has 2 divisors, whose sum is σ = 9947430. Its totient is φ = 9947428.

The previous prime is 9947417. The next prime is 9947437. The reversal of 9947429 is 9247499.

9947429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9443329 + 504100 = 3073^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 9947429 - 2¹² = 9943333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9947429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9947489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973714 + 4973715.

It is an arithmetic number, because the mean of its divisors is an integer number (4973715).

Almost surely, 2^9947429 is an apocalyptic number.

It is an amenable number.

9947429 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947429 is an equidigital number, since it uses as much as digits as its factorization.

9947429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 9947429 is about 3153.9545018912. The cubic root of 9947429 is about 215.0652695291.

The spelling of 9947429 in words is "nine million, nine hundred forty-seven thousand, four hundred twenty-nine".