479771639 has 2 divisors, whose sum is σ = 479771640. Its totient is φ = 479771638.

The previous prime is 479771599. The next prime is 479771659. The reversal of 479771639 is 936177974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 479771639 - 2¹² = 479767543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479771659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239885819 + 239885820.

It is an arithmetic number, because the mean of its divisors is an integer number (239885820).

Almost surely, 2^479771639 is an apocalyptic number.

479771639 is a deficient number, since it is larger than the sum of its proper divisors (1).

479771639 is an equidigital number, since it uses as much as digits as its factorization.

479771639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000376, while the sum is 53.

The square root of 479771639 is about 21903.6900772450. The cubic root of 479771639 is about 782.8493414419.

The spelling of 479771639 in words is "four hundred seventy-nine million, seven hundred seventy-one thousand, six hundred thirty-nine".