6986839287169 has 45 divisors (see below), whose sum is σ = 8436606570687. Its totient is φ = 5769333846528.

The previous prime is 6986839287137. The next prime is 6986839287173. The reversal of 6986839287169 is 9617829386896.

The square root of 6986839287169 is 2643263.

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

It can be written as a sum of positive squares in 7 ways, for example, as 2389074109569 + 4597765177600 = 1545663^2 + 2144240^2 .

It is not a de Polignac number, because 6986839287169 - 2⁵ = 6986839287137 is a prime.

It is a super-2 number, since 2×6986839287169² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6986839287092 and 6986839287101.

It is not an unprimeable number, because it can be changed into a prime (6986839287119) 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 44 ways as a sum of consecutive naturals, for example, 15560889057 + ... + 15560889505.

Almost surely, 2^{6986839287169} is an apocalyptic number.

6986839287169 is the 2643263-rd square number.

6986839287169 is the 1321632-nd centered octagonal number.

It is an amenable number.

6986839287169 is a deficient number, since it is larger than the sum of its proper divisors (1449767283518).

6986839287169 is an frugal number, since it uses more digits than its factorization.

6986839287169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 485 counting only the distinct ones).

The product of its digits is 3386105856, while the sum is 82.

The spelling of 6986839287169 in words is "six trillion, nine hundred eighty-six billion, eight hundred thirty-nine million, two hundred eighty-seven thousand, one hundred sixty-nine".