447392820 has 96 divisors (see below), whose sum is σ = 1466631936. Its totient is φ = 99763200.

The previous prime is 447392819. The next prime is 447392821. The reversal of 447392820 is 28293744.

It is an interprime number because it is at equal distance from previous prime (447392819) and next prime (447392821).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447392821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4230 + ... + 30210.

It is an arithmetic number, because the mean of its divisors is an integer number (15277416).

Almost surely, 2^447392820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447392820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733315968).

447392820 is an abundant number, since it is smaller than the sum of its proper divisors (1019239116).

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

447392820 is a wasteful number, since it uses less digits than its factorization.

447392820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26041 (or 26039 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 447392820 is about 21151.6623460190. The cubic root of 447392820 is about 764.8266342161.

The spelling of 447392820 in words is "four hundred forty-seven million, three hundred ninety-two thousand, eight hundred twenty".