5639817 has 4 divisors (see below), whose sum is σ = 7519760. Its totient is φ = 3759876.

The previous prime is 5639813. The next prime is 5639831. The reversal of 5639817 is 7189365.

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 not a de Polignac number, because 5639817 - 2² = 5639813 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5639813) 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, 939967 + ... + 939972.

It is an arithmetic number, because the mean of its divisors is an integer number (1879940).

Almost surely, 2^5639817 is an apocalyptic number.

It is an amenable number.

5639817 is a deficient number, since it is larger than the sum of its proper divisors (1879943).

5639817 is a wasteful number, since it uses less digits than its factorization.

5639817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879942.

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

The square root of 5639817 is about 2374.8298886447. The cubic root of 5639817 is about 178.0006838336. Note that the first 3 decimals are identical.

The spelling of 5639817 in words is "five million, six hundred thirty-nine thousand, eight hundred seventeen".