6459979876 has 27 divisors (see below), whose sum is σ = 13152964377. Its totient is φ = 2768080560.

The previous prime is 6459979873. The next prime is 6459979901. The reversal of 6459979876 is 6789799546.

The square root of 6459979876 is 80374.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3229194276 + 3230785600 = 56826^2 + 56840^2 .

It is not an unprimeable number, because it can be changed into a prime (6459979871) 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 in 8 ways as a sum of consecutive naturals, for example, 1122366 + ... + 1128106.

Almost surely, 2^6459979876 is an apocalyptic number.

6459979876 is the 80374-th square number.

It is an amenable number.

6459979876 is an abundant number, since it is smaller than the sum of its proper divisors (6692984501).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6459979876 is an frugal number, since it uses more digits than its factorization.

6459979876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500 (or 5750 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 70.

The cubic root of 6459979876 is about 1862.4175482080.

The spelling of 6459979876 in words is "six billion, four hundred fifty-nine million, nine hundred seventy-nine thousand, eight hundred seventy-six".