839472062647 has 4 divisors (see below), whose sum is σ = 842955349456. Its totient is φ = 835988775840.

The previous prime is 839472062633. The next prime is 839472062651. The reversal of 839472062647 is 746260274938.

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-839472062647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 839472062591 and 839472062600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839472062347) 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, 1741643043 + ... + 1741643524.

It is an arithmetic number, because the mean of its divisors is an integer number (210738837364).

Almost surely, 2^839472062647 is an apocalyptic number.

839472062647 is a deficient number, since it is larger than the sum of its proper divisors (3483286809).

839472062647 is a wasteful number, since it uses less digits than its factorization.

839472062647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3483286808.

The product of its (nonzero) digits is 24385536, while the sum is 58.

The spelling of 839472062647 in words is "eight hundred thirty-nine billion, four hundred seventy-two million, sixty-two thousand, six hundred forty-seven".