6774789839 has 4 divisors (see below), whose sum is σ = 6803136480. Its totient is φ = 6746443200.

The previous prime is 6774789811. The next prime is 6774789841. The reversal of 6774789839 is 9389874776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6774789839 - 2⁸ = 6774789583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6774789859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14172962 + ... + 14173439.

It is an arithmetic number, because the mean of its divisors is an integer number (1700784120).

Almost surely, 2^6774789839 is an apocalyptic number.

6774789839 is a deficient number, since it is larger than the sum of its proper divisors (28346641).

6774789839 is a wasteful number, since it uses less digits than its factorization.

6774789839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28346640.

The product of its digits is 128024064, while the sum is 68.

The square root of 6774789839 is about 82309.1115187134. Note that the first 3 decimals coincide. The cubic root of 6774789839 is about 1892.1923216863.

The spelling of 6774789839 in words is "six billion, seven hundred seventy-four million, seven hundred eighty-nine thousand, eight hundred thirty-nine".