394330771 has 4 divisors (see below), whose sum is σ = 394522344. Its totient is φ = 394139200.

The previous prime is 394330753. The next prime is 394330813. The reversal of 394330771 is 177033493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394330771 - 2¹¹ = 394328723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394330771.

It is not an unprimeable number, because it can be changed into a prime (394330721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92665 + ... + 96826.

It is an arithmetic number, because the mean of its divisors is an integer number (98630586).

Almost surely, 2^394330771 is an apocalyptic number.

394330771 is a deficient number, since it is larger than the sum of its proper divisors (191573).

394330771 is a wasteful number, since it uses less digits than its factorization.

394330771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191572.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 394330771 is about 19857.7634944120. The cubic root of 394330771 is about 733.3087874475.

The spelling of 394330771 in words is "three hundred ninety-four million, three hundred thirty thousand, seven hundred seventy-one".