447647478 has 32 divisors (see below), whose sum is σ = 902292480. Its totient is φ = 148055040.

The previous prime is 447647477. The next prime is 447647479. The reversal of 447647478 is 874746744.

It is an interprime number because it is at equal distance from previous prime (447647477) and next prime (447647479).

Its product of digits (4214784) is a multiple of the sum of its prime divisors (1372).

It is a self number, because there is not a number n which added to its sum of digits gives 447647478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447647477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698038 + ... + 698678.

It is an arithmetic number, because the mean of its divisors is an integer number (28196640).

Almost surely, 2^447647478 is an apocalyptic number.

447647478 is an abundant number, since it is smaller than the sum of its proper divisors (454645002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447647478 is a wasteful number, since it uses less digits than its factorization.

447647478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 4214784, while the sum is 51.

The square root of 447647478 is about 21157.6813001803. The cubic root of 447647478 is about 764.9717209419.

The spelling of 447647478 in words is "four hundred forty-seven million, six hundred forty-seven thousand, four hundred seventy-eight".