5639859801 has 9 divisors (see below), whose sum is σ = 8146789599. Its totient is φ = 3759756336.

The previous prime is 5639859787. The next prime is 5639859829. The reversal of 5639859801 is 1089589365.

It is a happy number.

The square root of 5639859801 is 75099.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 538472025 + 5101387776 = 23205^2 + 71424^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is a de Polignac number, because none of the positive numbers 2^k-5639859801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5639859101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 212781 + ... + 237813.

Almost surely, 2^5639859801 is an apocalyptic number.

5639859801 is the 75099-th square number.

5639859801 is the 37550-th centered octagonal number.

It is an amenable number.

5639859801 is a deficient number, since it is larger than the sum of its proper divisors (2506929798).

5639859801 is an frugal number, since it uses more digits than its factorization.

5639859801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50072 (or 25036 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The cubic root of 5639859801 is about 1780.0113411936.

The spelling of 5639859801 in words is "five billion, six hundred thirty-nine million, eight hundred fifty-nine thousand, eight hundred one".