5639955920 has 40 divisors (see below), whose sum is σ = 13142849280. Its totient is φ = 2250829440.

The previous prime is 5639955869. The next prime is 5639955943. The reversal of 5639955920 is 295599365.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45176 + ... + 115415.

It is an arithmetic number, because the mean of its divisors is an integer number (328571232).

Almost surely, 2^5639955920 is an apocalyptic number.

It is an amenable number.

5639955920 is an abundant number, since it is smaller than the sum of its proper divisors (7502893360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5639955920 is a wasteful number, since it uses less digits than its factorization.

5639955920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161043 (or 161037 counting only the distinct ones).

The product of its (nonzero) digits is 3280500, while the sum is 53.

The square root of 5639955920 is about 75099.6399458746. The cubic root of 5639955920 is about 1780.0214532616.

The spelling of 5639955920 in words is "five billion, six hundred thirty-nine million, nine hundred fifty-five thousand, nine hundred twenty".