6390355847 has 4 divisors (see below), whose sum is σ = 6390700536. Its totient is φ = 6390011160.

The previous prime is 6390355819. The next prime is 6390355849. The reversal of 6390355847 is 7485530936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6390355847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6390355795 and 6390355804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390355849) 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, 142853 + ... + 182174.

It is an arithmetic number, because the mean of its divisors is an integer number (1597675134).

Almost surely, 2^6390355847 is an apocalyptic number.

6390355847 is a deficient number, since it is larger than the sum of its proper divisors (344689).

6390355847 is a wasteful number, since it uses less digits than its factorization.

6390355847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344688.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The square root of 6390355847 is about 79939.7013191818. The cubic root of 6390355847 is about 1855.7024772627.

The spelling of 6390355847 in words is "six billion, three hundred ninety million, three hundred fifty-five thousand, eight hundred forty-seven".