4478538447 has 6 divisors (see below), whose sum is σ = 6468999992. Its totient is φ = 2985692292.

The previous prime is 4478538437. The next prime is 4478538457. The reversal of 4478538447 is 7448358744.

4478538447 is a `hidden beast` number, since 4 + 478 + 53 + 84 + 47 = 666.

It is an interprime number because it is at equal distance from previous prime (4478538437) and next prime (4478538457).

It is not a de Polignac number, because 4478538447 - 2¹⁵ = 4478505679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4478538393 and 4478538402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4478538437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248807683 + ... + 248807700.

Almost surely, 2^4478538447 is an apocalyptic number.

4478538447 is a deficient number, since it is larger than the sum of its proper divisors (1990461545).

4478538447 is a wasteful number, since it uses less digits than its factorization.

4478538447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497615389 (or 497615386 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 54.

The square root of 4478538447 is about 66921.8831698571. The cubic root of 4478538447 is about 1648.3348302792.

The spelling of 4478538447 in words is "four billion, four hundred seventy-eight million, five hundred thirty-eight thousand, four hundred forty-seven".