479135521 has 4 divisors (see below), whose sum is σ = 504353200. Its totient is φ = 453917844.

The previous prime is 479135509. The next prime is 479135539. The reversal of 479135521 is 125531974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 479135521 - 2⁹ = 479135009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479135581) 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, 12608811 + ... + 12608848.

It is an arithmetic number, because the mean of its divisors is an integer number (126088300).

Almost surely, 2^479135521 is an apocalyptic number.

It is an amenable number.

479135521 is a deficient number, since it is larger than the sum of its proper divisors (25217679).

479135521 is a wasteful number, since it uses less digits than its factorization.

479135521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25217678.

The product of its digits is 37800, while the sum is 37.

The square root of 479135521 is about 21889.1644655524. The cubic root of 479135521 is about 782.5032012036.

The spelling of 479135521 in words is "four hundred seventy-nine million, one hundred thirty-five thousand, five hundred twenty-one".