639380203 has 16 divisors (see below), whose sum is σ = 797704704. Its totient is φ = 497871360.

The previous prime is 639380167. The next prime is 639380213. The reversal of 639380203 is 302083936.

639380203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 639380203 - 2¹⁷ = 639249131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (639380213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202251 + ... + 205387.

It is an arithmetic number, because the mean of its divisors is an integer number (49856544).

Almost surely, 2^639380203 is an apocalyptic number.

639380203 is a deficient number, since it is larger than the sum of its proper divisors (158324501).

639380203 is a wasteful number, since it uses less digits than its factorization.

639380203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 639380203 is about 25285.9685003363. The cubic root of 639380203 is about 861.4955961288.

The spelling of 639380203 in words is "six hundred thirty-nine million, three hundred eighty thousand, two hundred three".