5639871 has 8 divisors (see below), whose sum is σ = 7597744. Its totient is φ = 3720960.

The previous prime is 5639867. The next prime is 5639927. The reversal of 5639871 is 1789365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5639871 - 2² = 5639867 is a prime.

It is a Duffinian number.

5639871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9400 + ... + 9981.

It is an arithmetic number, because the mean of its divisors is an integer number (949718).

Almost surely, 2^5639871 is an apocalyptic number.

5639871 is a deficient number, since it is larger than the sum of its proper divisors (1957873).

5639871 is a wasteful number, since it uses less digits than its factorization.

5639871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19481.

The product of its digits is 45360, while the sum is 39.

The square root of 5639871 is about 2374.8412578528. The cubic root of 5639871 is about 178.0012519375.

The spelling of 5639871 in words is "five million, six hundred thirty-nine thousand, eight hundred seventy-one".