5639997 has 16 divisors (see below), whose sum is σ = 8246592. Its totient is φ = 3400320.

The previous prime is 5639989. The next prime is 5640031. The reversal of 5639997 is 7999365.

It is a happy number.

It is not a de Polignac number, because 5639997 - 2³ = 5639989 is a prime.

5639997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8833 + ... + 9449.

It is an arithmetic number, because the mean of its divisors is an integer number (515412).

Almost surely, 2^5639997 is an apocalyptic number.

It is an amenable number.

5639997 is a deficient number, since it is larger than the sum of its proper divisors (2606595).

5639997 is a wasteful number, since it uses less digits than its factorization.

5639997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its digits is 459270, while the sum is 48.

The square root of 5639997 is about 2374.8677857936. The cubic root of 5639997 is about 178.0025774992.

The spelling of 5639997 in words is "five million, six hundred thirty-nine thousand, nine hundred ninety-seven".