394922283912 has 324 divisors, whose sum is σ = 1208396908485. Its totient is φ = 120938650560.

The previous prime is 394922283901. The next prime is 394922283953. The reversal of 394922283912 is 219382229493.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

394922283912 is a `hidden beast` number, since 394 + 92 + 2 + 2 + 83 + 91 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 337670236836 + 57252047076 = 581094^2 + 239274^2 .

It is a tau number, because it is divible by the number of its divisors (324).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=444366.

It is a super-2 number, since 2×394922283912² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1871669487 + ... + 1871669697.

Almost surely, 2^394922283912 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 394922283912

394922283912 is an abundant number, since it is smaller than the sum of its proper divisors (813474624573).

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

394922283912 is an frugal number, since it uses more digits than its factorization.

394922283912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 229 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 394922283912 in words is "three hundred ninety-four billion, nine hundred twenty-two million, two hundred eighty-three thousand, nine hundred twelve".