405247319932 has 144 divisors (see below), whose sum is σ = 897837333120. Its totient is φ = 158628758400.

The previous prime is 405247319929. The next prime is 405247319963. The reversal of 405247319932 is 239913742504.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96233307 + ... + 96237517.

It is an arithmetic number, because the mean of its divisors is an integer number (6234981480).

Almost surely, 2^405247319932 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 405247319932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448918666560).

405247319932 is an abundant number, since it is smaller than the sum of its proper divisors (492590013188).

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

405247319932 is a wasteful number, since it uses less digits than its factorization.

405247319932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632 (or 4623 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 405247319932 in words is "four hundred five billion, two hundred forty-seven million, three hundred nineteen thousand, nine hundred thirty-two".