487662139 has 2 divisors, whose sum is σ = 487662140. Its totient is φ = 487662138.

The previous prime is 487662059. The next prime is 487662143. The reversal of 487662139 is 931266784.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 487662139 - 2¹⁷ = 487531067 is a prime.

It is not a weakly prime, because it can be changed into another prime (487660139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243831069 + 243831070.

It is an arithmetic number, because the mean of its divisors is an integer number (243831070).

Almost surely, 2^487662139 is an apocalyptic number.

487662139 is a deficient number, since it is larger than the sum of its proper divisors (1).

487662139 is an equidigital number, since it uses as much as digits as its factorization.

487662139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 487662139 is about 22083.0735858938. The cubic root of 487662139 is about 787.1177022042.

It can be divided in two parts, 48766 and 2139, that added together give a palindrome (50905).

The spelling of 487662139 in words is "four hundred eighty-seven million, six hundred sixty-two thousand, one hundred thirty-nine".