394379882 has 8 divisors (see below), whose sum is σ = 637075236. Its totient is φ = 182021472.

The previous prime is 394379813. The next prime is 394379897. The reversal of 394379882 is 288973493.

It is a Cunningham number, because it is equal to 19859²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 394379881 + 1 = 19859^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7584203 + ... + 7584254.

Almost surely, 2^394379882 is an apocalyptic number.

394379882 is a deficient number, since it is larger than the sum of its proper divisors (242695354).

394379882 is a wasteful number, since it uses less digits than its factorization.

394379882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168472.

The product of its digits is 2612736, while the sum is 53.

The square root of 394379882 is about 19859.0000251775. Note that the first 4 decimals coincide. The cubic root of 394379882 is about 733.3392289241.

The spelling of 394379882 in words is "three hundred ninety-four million, three hundred seventy-nine thousand, eight hundred eighty-two".