394381488004 has 81 divisors (see below), whose sum is σ = 830155490199. Its totient is φ = 163455319440.

The previous prime is 394381487989. The next prime is 394381488029. The reversal of 394381488004 is 400884183493.

The square root of 394381488004 is 627998.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 272550409 + ... + 272551855.

Almost surely, 2^394381488004 is an apocalyptic number.

394381488004 is the 627998-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394381488004

394381488004 is an abundant number, since it is smaller than the sum of its proper divisors (435774002195).

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

394381488004 is an equidigital number, since it uses as much as digits as its factorization.

394381488004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 394381488004 in words is "three hundred ninety-four billion, three hundred eighty-one million, four hundred eighty-eight thousand, four".