478503449 has 4 divisors (see below), whose sum is σ = 478554420. Its totient is φ = 478452480.

The previous prime is 478503439. The next prime is 478503457. The reversal of 478503449 is 944305874.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 944305874 = 2 ⋅472152937.

It can be written as a sum of positive squares in 2 ways, for example, as 51337225 + 427166224 = 7165^2 + 20668^2 .

It is a cyclic number.

It is not a de Polignac number, because 478503449 - 2⁴ = 478503433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478503409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6872 + ... + 31689.

It is an arithmetic number, because the mean of its divisors is an integer number (119638605).

Almost surely, 2^478503449 is an apocalyptic number.

It is an amenable number.

478503449 is a deficient number, since it is larger than the sum of its proper divisors (50971).

478503449 is a wasteful number, since it uses less digits than its factorization.

478503449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50970.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 478503449 is about 21874.7216896581. The cubic root of 478503449 is about 782.1589589928.

The spelling of 478503449 in words is "four hundred seventy-eight million, five hundred three thousand, four hundred forty-nine".