7879559787 has 24 divisors (see below), whose sum is σ = 13069767360. Its totient is φ = 4524148080.

The previous prime is 7879559783. The next prime is 7879559797.

It is a happy number.

7879559787 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7879559787 - 2² = 7879559783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7879559783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2092633 + ... + 2096394.

It is an arithmetic number, because the mean of its divisors is an integer number (544573640).

Almost surely, 2^7879559787 is an apocalyptic number.

7879559787 is a deficient number, since it is larger than the sum of its proper divisors (5190207573).

7879559787 is a wasteful number, since it uses less digits than its factorization.

7879559787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189063 (or 4189060 counting only the distinct ones).

The product of its digits is 311169600, while the sum is 72.

The square root of 7879559787 is about 88766.8845178200. The cubic root of 7879559787 is about 1989.9125225219.

The spelling of 7879559787 in words is "seven billion, eight hundred seventy-nine million, five hundred fifty-nine thousand, seven hundred eighty-seven".