7898789879 has 2 divisors, whose sum is σ = 7898789880. Its totient is φ = 7898789878.

The previous prime is 7898789861. The next prime is 7898789893. The reversal of 7898789879 is 9789878987.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7898789879 - 2¹⁶ = 7898724343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7898789809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3949394939 + 3949394940.

It is an arithmetic number, because the mean of its divisors is an integer number (3949394940).

Almost surely, 2^7898789879 is an apocalyptic number.

7898789879 is a deficient number, since it is larger than the sum of its proper divisors (1).

7898789879 is an equidigital number, since it uses as much as digits as its factorization.

7898789879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024192512, while the sum is 80.

The square root of 7898789879 is about 88875.1364499656. The cubic root of 7898789879 is about 1991.5300034664.

The spelling of 7898789879 in words is "seven billion, eight hundred ninety-eight million, seven hundred eighty-nine thousand, eight hundred seventy-nine".