6839690789449 has 4 divisors (see below), whose sum is σ = 7816789473664. Its totient is φ = 5862592105236.

The previous prime is 6839690789441. The next prime is 6839690789471. The reversal of 6839690789449 is 9449870969386.

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 6839690789449 - 2³ = 6839690789441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6839690789441) 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, 488549342097 + ... + 488549342110.

It is an arithmetic number, because the mean of its divisors is an integer number (1954197368416).

Almost surely, 2^{6839690789449} is an apocalyptic number.

It is an amenable number.

6839690789449 is a deficient number, since it is larger than the sum of its proper divisors (977098684215).

6839690789449 is an equidigital number, since it uses as much as digits as its factorization.

6839690789449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977098684214.

The product of its (nonzero) digits is 5079158784, while the sum is 82.

The spelling of 6839690789449 in words is "six trillion, eight hundred thirty-nine billion, six hundred ninety million, seven hundred eighty-nine thousand, four hundred forty-nine".