394884074 has 16 divisors (see below), whose sum is σ = 638507688. Its totient is φ = 182077632.

The previous prime is 394884071. The next prime is 394884101. The reversal of 394884074 is 470488493.

It can be written as a sum of positive squares in 4 ways, for example, as 76440049 + 318444025 = 8743^2 + 17845^2 .

It is not an unprimeable number, because it can be changed into a prime (394884071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22244 + ... + 35840.

Almost surely, 2^394884074 is an apocalyptic number.

394884074 is a deficient number, since it is larger than the sum of its proper divisors (243623614).

394884074 is a wasteful number, since it uses less digits than its factorization.

394884074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 394884074 is about 19871.6902652995. The cubic root of 394884074 is about 733.6516065206.

The spelling of 394884074 in words is "three hundred ninety-four million, eight hundred eighty-four thousand, seventy-four".