2947447 has 2 divisors, whose sum is σ = 2947448. Its totient is φ = 2947446.

The previous prime is 2947429. The next prime is 2947471. The reversal of 2947447 is 7447492.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2947447 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 9³ + 4⁵ + 7⁵ + 4⁶ + 4⁶ + 7⁷ .

2947447 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2947487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473723 + 1473724.

It is an arithmetic number, because the mean of its divisors is an integer number (1473724).

2^2947447 is an apocalyptic number.

2947447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947447 is an equidigital number, since it uses as much as digits as its factorization.

2947447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 2947447 is about 1716.8130358312. The cubic root of 2947447 is about 143.3778294639.

The spelling of 2947447 in words is "two million, nine hundred forty-seven thousand, four hundred forty-seven".