6838640441 has 4 divisors (see below), whose sum is σ = 6839626752. Its totient is φ = 6837654132.

The previous prime is 6838640437. The next prime is 6838640447. The reversal of 6838640441 is 1440468386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6838640441 - 2² = 6838640437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6838640392 and 6838640401.

It is not an unprimeable number, because it can be changed into a prime (6838640447) 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, 482681 + ... + 496646.

It is an arithmetic number, because the mean of its divisors is an integer number (1709906688).

Almost surely, 2^6838640441 is an apocalyptic number.

It is an amenable number.

6838640441 is a deficient number, since it is larger than the sum of its proper divisors (986311).

6838640441 is an equidigital number, since it uses as much as digits as its factorization.

6838640441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986310.

The product of its (nonzero) digits is 442368, while the sum is 44.

The square root of 6838640441 is about 82696.0727060240. The cubic root of 6838640441 is about 1898.1182145244.

The spelling of 6838640441 in words is "six billion, eight hundred thirty-eight million, six hundred forty thousand, four hundred forty-one".