7870879 has 2 divisors, whose sum is σ = 7870880. Its totient is φ = 7870878.

The previous prime is 7870867. The next prime is 7870897. The reversal of 7870879 is 9780787.

It is a happy number.

Together with next prime (7870897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (9780787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7870879 - 2⁹ = 7870367 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7870679) 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, 3935439 + 3935440.

It is an arithmetic number, because the mean of its divisors is an integer number (3935440).

Almost surely, 2^7870879 is an apocalyptic number.

7870879 is a deficient number, since it is larger than the sum of its proper divisors (1).

7870879 is an equidigital number, since it uses as much as digits as its factorization.

7870879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 7870879 is about 2805.5086882774. The cubic root of 7870879 is about 198.9181502236.

It can be divided in two parts, 78708 and 79, that added together give a palindrome (78787).

The spelling of 7870879 in words is "seven million, eight hundred seventy thousand, eight hundred seventy-nine".