6854838939 has 24 divisors (see below), whose sum is σ = 10889965632. Its totient is φ = 4128606720.

The previous prime is 6854838931. The next prime is 6854838941. The reversal of 6854838939 is 9398384586.

6854838939 is a `hidden beast` number, since 6 + 8 + 548 + 3 + 89 + 3 + 9 = 666.

It is not a de Polignac number, because 6854838939 - 2³ = 6854838931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6854838931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 617782 + ... + 628779.

It is an arithmetic number, because the mean of its divisors is an integer number (453748568).

Almost surely, 2^6854838939 is an apocalyptic number.

6854838939 is a deficient number, since it is larger than the sum of its proper divisors (4035126693).

6854838939 is a wasteful number, since it uses less digits than its factorization.

6854838939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246627 (or 1246624 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The square root of 6854838939 is about 82793.9547249677. The cubic root of 6854838939 is about 1899.6157061192.

The spelling of 6854838939 in words is "six billion, eight hundred fifty-four million, eight hundred thirty-eight thousand, nine hundred thirty-nine".