479638457 has 2 divisors, whose sum is σ = 479638458. Its totient is φ = 479638456.

The previous prime is 479638433. The next prime is 479638463. The reversal of 479638457 is 754836974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472584121 + 7054336 = 21739^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 479638457 - 2²² = 475444153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 479638399 and 479638408.

It is not a weakly prime, because it can be changed into another prime (479638427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239819228 + 239819229.

It is an arithmetic number, because the mean of its divisors is an integer number (239819229).

Almost surely, 2^479638457 is an apocalyptic number.

It is an amenable number.

479638457 is a deficient number, since it is larger than the sum of its proper divisors (1).

479638457 is an equidigital number, since it uses as much as digits as its factorization.

479638457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 53.

The square root of 479638457 is about 21900.6496935593. The cubic root of 479638457 is about 782.7768964969.

The spelling of 479638457 in words is "four hundred seventy-nine million, six hundred thirty-eight thousand, four hundred fifty-seven".