394934221194304 has 63 divisors (see below), whose sum is σ = 861423485232261. Its totient is φ = 179514760170240.

The previous prime is 394934221194263. The next prime is 394934221194341. The reversal of 394934221194304 is 403491122439493.

The square root of 394934221194304 is 19872952.

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

It can be written as a sum of positive squares in only one way, i.e., 330608688291904 + 64325532902400 = 18182648^2 + 8020320^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1748706862 + ... + 1748932690.

Almost surely, 2^{394934221194304} is an apocalyptic number.

394934221194304 is the 19872952-nd square number.

It is an amenable number.

394934221194304 is an abundant number, since it is smaller than the sum of its proper divisors (466489264037957).

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

394934221194304 is an frugal number, since it uses more digits than its factorization.

394934221194304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451692 (or 225842 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 58.

The spelling of 394934221194304 in words is "three hundred ninety-four trillion, nine hundred thirty-four billion, two hundred twenty-one million, one hundred ninety-four thousand, three hundred four".