7879447 has 2 divisors, whose sum is σ = 7879448. Its totient is φ = 7879446.

The previous prime is 7879427. The next prime is 7879453. The reversal of 7879447 is 7449787.

7879447 is nontrivially palindromic in base 11.

It is a strong prime.

It is an emirp because it is prime and its reverse (7449787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7879447 - 2¹¹ = 7877399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7879397 and 7879406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7879427) 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, 3939723 + 3939724.

It is an arithmetic number, because the mean of its divisors is an integer number (3939724).

Almost surely, 2^7879447 is an apocalyptic number.

7879447 is a deficient number, since it is larger than the sum of its proper divisors (1).

7879447 is an equidigital number, since it uses as much as digits as its factorization.

7879447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 46.

The square root of 7879447 is about 2807.0352687489. The cubic root of 7879447 is about 198.9903028026.

The spelling of 7879447 in words is "seven million, eight hundred seventy-nine thousand, four hundred forty-seven".