6840448417 has 4 divisors (see below), whose sum is σ = 7462307376. Its totient is φ = 6218589460.

The previous prime is 6840448411. The next prime is 6840448427. The reversal of 6840448417 is 7148440486.

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 6840448417 - 2³ = 6840448409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6840448411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310929463 + ... + 310929484.

It is an arithmetic number, because the mean of its divisors is an integer number (1865576844).

Almost surely, 2^6840448417 is an apocalyptic number.

It is an amenable number.

6840448417 is a deficient number, since it is larger than the sum of its proper divisors (621858959).

6840448417 is a wasteful number, since it uses less digits than its factorization.

6840448417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621858958.

The product of its (nonzero) digits is 688128, while the sum is 46.

The square root of 6840448417 is about 82707.0034338084. The cubic root of 6840448417 is about 1898.2854724185.

The spelling of 6840448417 in words is "six billion, eight hundred forty million, four hundred forty-eight thousand, four hundred seventeen".