671214839 has 4 divisors (see below), whose sum is σ = 671831160. Its totient is φ = 670598520.

The previous prime is 671214827. The next prime is 671214853. The reversal of 671214839 is 938412176.

671214839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 671214839 - 2⁴ = 671214823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671214796 and 671214805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671214809) 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, 306524 + ... + 308705.

It is an arithmetic number, because the mean of its divisors is an integer number (167957790).

Almost surely, 2^671214839 is an apocalyptic number.

671214839 is a deficient number, since it is larger than the sum of its proper divisors (616321).

671214839 is a wasteful number, since it uses less digits than its factorization.

671214839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616320.

The product of its digits is 72576, while the sum is 41.

The square root of 671214839 is about 25907.8142458989. The cubic root of 671214839 is about 875.5625613385.

The spelling of 671214839 in words is "six hundred seventy-one million, two hundred fourteen thousand, eight hundred thirty-nine".