2947429 has 2 divisors, whose sum is σ = 2947430. Its totient is φ = 2947428.

The previous prime is 2947403. The next prime is 2947447. The reversal of 2947429 is 9247492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2896804 + 50625 = 1702^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 2947429 - 2¹¹ = 2945381 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2947499) 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, 1473714 + 1473715.

It is an arithmetic number, because the mean of its divisors is an integer number (1473715).

2^2947429 is an apocalyptic number.

It is an amenable number.

2947429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947429 is an equidigital number, since it uses as much as digits as its factorization.

2947429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 2947429 is about 1716.8077935517. The cubic root of 2947429 is about 143.3775375948.

The spelling of 2947429 in words is "two million, nine hundred forty-seven thousand, four hundred twenty-nine".