9787879 has 2 divisors, whose sum is σ = 9787880. Its totient is φ = 9787878.

The previous prime is 9787871. The next prime is 9787901.

9787879 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9787879 - 2³ = 9787871 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9787871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4893939 + 4893940.

It is an arithmetic number, because the mean of its divisors is an integer number (4893940).

Almost surely, 2^9787879 is an apocalyptic number.

9787879 is a deficient number, since it is larger than the sum of its proper divisors (1).

9787879 is an equidigital number, since it uses as much as digits as its factorization.

9787879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 55.

The square root of 9787879 is about 3128.5586138028. The cubic root of 9787879 is about 213.9092330592.

The spelling of 9787879 in words is "nine million, seven hundred eighty-seven thousand, eight hundred seventy-nine".