4978447 has 2 divisors, whose sum is σ = 4978448. Its totient is φ = 4978446.

The previous prime is 4978429. The next prime is 4978451. The reversal of 4978447 is 7448794.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4978447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4978417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489223 + 2489224.

It is an arithmetic number, because the mean of its divisors is an integer number (2489224).

Almost surely, 2^4978447 is an apocalyptic number.

4978447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978447 is an equidigital number, since it uses as much as digits as its factorization.

4978447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 4978447 is about 2231.2433753403. The cubic root of 4978447 is about 170.7515400367.

The spelling of 4978447 in words is "four million, nine hundred seventy-eight thousand, four hundred forty-seven".