447497931540 has 192 divisors, whose sum is σ = 1372626984960. Its totient is φ = 108031080960.

The previous prime is 447497931533. The next prime is 447497931581. The reversal of 447497931540 is 45139794744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226122271 + ... + 226124249.

It is an arithmetic number, because the mean of its divisors is an integer number (7149098880).

Almost surely, 2^447497931540 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 447497931540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686313492480).

447497931540 is an abundant number, since it is smaller than the sum of its proper divisors (925129053420).

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

447497931540 is a wasteful number, since it uses less digits than its factorization.

447497931540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 447497931540 in words is "four hundred forty-seven billion, four hundred ninety-seven million, nine hundred thirty-one thousand, five hundred forty".