394681084 has 18 divisors (see below), whose sum is σ = 803458320. Its totient is φ = 169148952.

The previous prime is 394681073. The next prime is 394681093. The reversal of 394681084 is 480186493.

It is a self number, because there is not a number n which added to its sum of digits gives 394681084.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006644 + ... + 1007035.

Almost surely, 2^394681084 is an apocalyptic number.

It is an amenable number.

394681084 is an abundant number, since it is smaller than the sum of its proper divisors (408777236).

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

394681084 is a wasteful number, since it uses less digits than its factorization.

394681084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013697 (or 2013688 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 394681084 is about 19866.5820915426. The cubic root of 394681084 is about 733.5258738691.

The spelling of 394681084 in words is "three hundred ninety-four million, six hundred eighty-one thousand, eighty-four".