479444389 has 2 divisors, whose sum is σ = 479444390. Its totient is φ = 479444388.

The previous prime is 479444359. The next prime is 479444491. The reversal of 479444389 is 983444974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417507489 + 61936900 = 20433^2 + 7870^2 .

It is a cyclic number.

It is not a de Polignac number, because 479444389 - 2²¹ = 477347237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479444359) 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, 239722194 + 239722195.

It is an arithmetic number, because the mean of its divisors is an integer number (239722195).

Almost surely, 2^479444389 is an apocalyptic number.

It is an amenable number.

479444389 is a deficient number, since it is larger than the sum of its proper divisors (1).

479444389 is an equidigital number, since it uses as much as digits as its factorization.

479444389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 52.

The square root of 479444389 is about 21896.2186004799. The cubic root of 479444389 is about 782.6713083276.

The spelling of 479444389 in words is "four hundred seventy-nine million, four hundred forty-four thousand, three hundred eighty-nine".