455638447 has 6 divisors (see below), whose sum is σ = 500825864. Its totient is φ = 414216660.

The previous prime is 455638439. The next prime is 455638451. The reversal of 455638447 is 744836554.

It is not a de Polignac number, because 455638447 - 2³ = 455638439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 455638397 and 455638406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455638427) 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, 1882683 + ... + 1882924.

Almost surely, 2^455638447 is an apocalyptic number.

455638447 is a deficient number, since it is larger than the sum of its proper divisors (45187417).

455638447 is a wasteful number, since it uses less digits than its factorization.

455638447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765629 (or 3765618 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 46.

The square root of 455638447 is about 21345.6891900918. The cubic root of 455638447 is about 769.4967459865.

The spelling of 455638447 in words is "four hundred fifty-five million, six hundred thirty-eight thousand, four hundred forty-seven".