394661039922 has 18 divisors (see below), whose sum is σ = 855104694717. Its totient is φ = 131552791536.

The previous prime is 394661039891. The next prime is 394661039953. The reversal of 394661039922 is 229930166493.

394661039922 is a `hidden beast` number, since 394 + 66 + 103 + 9 + 92 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (394661039891) and next prime (394661039953).

It can be written as a sum of positive squares in 2 ways, for example, as 300982807161 + 93678232761 = 548619^2 + 306069^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=444219.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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, 2591278 + ... + 2739350.

Almost surely, 2^394661039922 is an apocalyptic number.

394661039922 is an abundant number, since it is smaller than the sum of its proper divisors (460443654795).

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

394661039922 is an frugal number, since it uses more digits than its factorization.

394661039922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296154 (or 148078 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 394661039922 in words is "three hundred ninety-four billion, six hundred sixty-one million, thirty-nine thousand, nine hundred twenty-two".