6879209481 has 9 divisors (see below), whose sum is σ = 9936995341. Its totient is φ = 4585973772.

The previous prime is 6879209471. The next prime is 6879209537. The reversal of 6879209481 is 1849029786.

The square root of 6879209481 is 82941.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 6879209481 - 2¹⁵ = 6879176713 is a prime.

It is a super-2 number, since 2×6879209481² = 94647046166960578722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6879209401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 235000 + ... + 262646.

Almost surely, 2^6879209481 is an apocalyptic number.

6879209481 is the 82941-st square number.

6879209481 is the 41471-st centered octagonal number.

It is an amenable number.

6879209481 is a deficient number, since it is larger than the sum of its proper divisors (3057785860).

6879209481 is an frugal number, since it uses more digits than its factorization.

6879209481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55300 (or 27650 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The cubic root of 6879209481 is about 1901.8642349862.

The spelling of 6879209481 in words is "six billion, eight hundred seventy-nine million, two hundred nine thousand, four hundred eighty-one".