6855590139 has 16 divisors (see below), whose sum is σ = 9532938240. Its totient is φ = 4377358080.

The previous prime is 6855590129. The next prime is 6855590141. The reversal of 6855590139 is 9310955586.

It is not a de Polignac number, because 6855590139 - 2⁴ = 6855590123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6855590091 and 6855590100.

It is not an unprimeable number, because it can be changed into a prime (6855590129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370959 + ... + 389000.

It is an arithmetic number, because the mean of its divisors is an integer number (595808640).

Almost surely, 2^6855590139 is an apocalyptic number.

6855590139 is a deficient number, since it is larger than the sum of its proper divisors (2677348101).

6855590139 is a wasteful number, since it uses less digits than its factorization.

6855590139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760090.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The square root of 6855590139 is about 82798.4911637887. The cubic root of 6855590139 is about 1899.6850945326.

The spelling of 6855590139 in words is "six billion, eight hundred fifty-five million, five hundred ninety thousand, one hundred thirty-nine".