394775969344 has 21 divisors (see below), whose sum is σ = 783393538747. Its totient is φ = 197385471424.

The previous prime is 394775969321. The next prime is 394775969347. The reversal of 394775969344 is 443969577493.

The square root of 394775969344 is 628312.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394775969347) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4987227 + ... + 5065765.

Almost surely, 2^394775969344 is an apocalyptic number.

394775969344 is the 628312-nd square number.

It is an amenable number.

394775969344 is a deficient number, since it is larger than the sum of its proper divisors (388617569403).

394775969344 is an frugal number, since it uses more digits than its factorization.

394775969344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157090 (or 78541 counting only the distinct ones).

The product of its digits is 617258880, while the sum is 70.

The spelling of 394775969344 in words is "three hundred ninety-four billion, seven hundred seventy-five million, nine hundred sixty-nine thousand, three hundred forty-four".