478323549 has 20 divisors (see below), whose sum is σ = 779491680. Its totient is φ = 289892520.

The previous prime is 478323523. The next prime is 478323553. The reversal of 478323549 is 945323874.

478323549 is a `hidden beast` number, since 4 + 7 + 83 + 23 + 549 = 666.

It is not a de Polignac number, because 478323549 - 2⁹ = 478323037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478323049) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 267529 + ... + 269310.

It is an arithmetic number, because the mean of its divisors is an integer number (38974584).

Almost surely, 2^478323549 is an apocalyptic number.

It is an amenable number.

478323549 is a deficient number, since it is larger than the sum of its proper divisors (301168131).

478323549 is a wasteful number, since it uses less digits than its factorization.

478323549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536862 (or 536853 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 478323549 is about 21870.6092507731. The cubic root of 478323549 is about 782.0609255410.

The spelling of 478323549 in words is "four hundred seventy-eight million, three hundred twenty-three thousand, five hundred forty-nine".