479872609 has 4 divisors (see below), whose sum is σ = 484275220. Its totient is φ = 475470000.

The previous prime is 479872577. The next prime is 479872633. The reversal of 479872609 is 906278974.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167573025 + 312299584 = 12945^2 + 17672^2 .

It is a cyclic number.

It is not a de Polignac number, because 479872609 - 2⁵ = 479872577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479872639) 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 in 3 ways as a sum of consecutive naturals, for example, 2201142 + ... + 2201359.

It is an arithmetic number, because the mean of its divisors is an integer number (121068805).

Almost surely, 2^479872609 is an apocalyptic number.

It is an amenable number.

479872609 is a deficient number, since it is larger than the sum of its proper divisors (4402611).

479872609 is a wasteful number, since it uses less digits than its factorization.

479872609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402610.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 479872609 is about 21905.9948187705. The cubic root of 479872609 is about 782.9042555907.

The spelling of 479872609 in words is "four hundred seventy-nine million, eight hundred seventy-two thousand, six hundred nine".