6855988469 has 16 divisors (see below), whose sum is σ = 7645083264. Its totient is φ = 6095294400.

The previous prime is 6855988459. The next prime is 6855988483. The reversal of 6855988469 is 9648895586.

It is a cyclic number.

It is not a de Polignac number, because 6855988469 - 2⁸ = 6855988213 is a prime.

It is a super-2 number, since 2×6855988469² = 94009155774121927922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6855988399 and 6855988408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6855988459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162407 + ... + 200219.

It is an arithmetic number, because the mean of its divisors is an integer number (477817704).

Almost surely, 2^6855988469 is an apocalyptic number.

It is an amenable number.

6855988469 is a deficient number, since it is larger than the sum of its proper divisors (789094795).

6855988469 is a wasteful number, since it uses less digits than its factorization.

6855988469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38188.

The product of its digits is 149299200, while the sum is 68.

The square root of 6855988469 is about 82800.8965470785. The cubic root of 6855988469 is about 1899.7218862550.

The spelling of 6855988469 in words is "six billion, eight hundred fifty-five million, nine hundred eighty-eight thousand, four hundred sixty-nine".