639848483 has 2 divisors, whose sum is σ = 639848484. Its totient is φ = 639848482.

The previous prime is 639848467. The next prime is 639848491. The reversal of 639848483 is 384848936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 639848483 - 2⁴ = 639848467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (639848683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319924241 + 319924242.

It is an arithmetic number, because the mean of its divisors is an integer number (319924242).

Almost surely, 2^639848483 is an apocalyptic number.

639848483 is a deficient number, since it is larger than the sum of its proper divisors (1).

639848483 is an equidigital number, since it uses as much as digits as its factorization.

639848483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 53.

The square root of 639848483 is about 25295.2264864342. The cubic root of 639848483 is about 861.7058636701.

The spelling of 639848483 in words is "six hundred thirty-nine million, eight hundred forty-eight thousand, four hundred eighty-three".