639082963 has 2 divisors, whose sum is σ = 639082964. Its totient is φ = 639082962.

The previous prime is 639082901. The next prime is 639083033. The reversal of 639082963 is 369280936.

It is a happy number.

639082963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 639082963 - 2¹³ = 639074771 is a prime.

It is not a weakly prime, because it can be changed into another prime (639082363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319541481 + 319541482.

It is an arithmetic number, because the mean of its divisors is an integer number (319541482).

Almost surely, 2^639082963 is an apocalyptic number.

639082963 is a deficient number, since it is larger than the sum of its proper divisors (1).

639082963 is an equidigital number, since it uses as much as digits as its factorization.

639082963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 639082963 is about 25280.0902490478. The cubic root of 639082963 is about 861.3620758637.

The spelling of 639082963 in words is "six hundred thirty-nine million, eighty-two thousand, nine hundred sixty-three".