7879867843 has 2 divisors, whose sum is σ = 7879867844. Its totient is φ = 7879867842.

The previous prime is 7879867819. The next prime is 7879867901. The reversal of 7879867843 is 3487689787.

It is a weak prime.

It is an emirp because it is prime and its reverse (3487689787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7879867843 - 2⁵ = 7879867811 is a prime.

It is not a weakly prime, because it can be changed into another prime (7879867243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939933921 + 3939933922.

It is an arithmetic number, because the mean of its divisors is an integer number (3939933922).

Almost surely, 2^7879867843 is an apocalyptic number.

7879867843 is a deficient number, since it is larger than the sum of its proper divisors (1).

7879867843 is an equidigital number, since it uses as much as digits as its factorization.

7879867843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113799168, while the sum is 67.

The square root of 7879867843 is about 88768.6196975035. The cubic root of 7879867843 is about 1989.9384544487.

It can be divided in two parts, 78798 and 67843, that added together give a palindrome (146641).

The spelling of 7879867843 in words is "seven billion, eight hundred seventy-nine million, eight hundred sixty-seven thousand, eight hundred forty-three".