6839073391 has 4 divisors (see below), whose sum is σ = 7136424432. Its totient is φ = 6541722352.

The previous prime is 6839073383. The next prime is 6839073407. The reversal of 6839073391 is 1933709386.

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 6839073391 - 2³ = 6839073383 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 (6839073301) 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, 148675486 + ... + 148675531.

It is an arithmetic number, because the mean of its divisors is an integer number (1784106108).

Almost surely, 2^6839073391 is an apocalyptic number.

6839073391 is a deficient number, since it is larger than the sum of its proper divisors (297351041).

6839073391 is a wasteful number, since it uses less digits than its factorization.

6839073391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297351040.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 6839073391 is about 82698.6903826173. The cubic root of 6839073391 is about 1898.1582699002.

The spelling of 6839073391 in words is "six billion, eight hundred thirty-nine million, seventy-three thousand, three hundred ninety-one".