478511539 has 4 divisors (see below), whose sum is σ = 522012600. Its totient is φ = 435010480.

The previous prime is 478511503. The next prime is 478511543. The reversal of 478511539 is 935115874.

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

It is a cyclic number.

It is not a de Polignac number, because 478511539 - 2⁹ = 478511027 is a prime.

It is a super-2 number, since 2×478511539² = 457946585912297042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478511495 and 478511504.

It is not an unprimeable number, because it can be changed into a prime (478511549) 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, 21750514 + ... + 21750535.

It is an arithmetic number, because the mean of its divisors is an integer number (130503150).

Almost surely, 2^478511539 is an apocalyptic number.

478511539 is a deficient number, since it is larger than the sum of its proper divisors (43501061).

478511539 is a wasteful number, since it uses less digits than its factorization.

478511539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43501060.

The product of its digits is 151200, while the sum is 43.

The square root of 478511539 is about 21874.9066055149. The cubic root of 478511539 is about 782.1633669236.

The spelling of 478511539 in words is "four hundred seventy-eight million, five hundred eleven thousand, five hundred thirty-nine".