394452331 has 16 divisors (see below), whose sum is σ = 511033600. Its totient is φ = 295666848.

The previous prime is 394452329. The next prime is 394452367. The reversal of 394452331 is 133254493.

It is a cyclic number.

It is not a de Polignac number, because 394452331 - 2¹ = 394452329 is a prime.

It is a super-2 number, since 2×394452331² = 311185282862667122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394452371) 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 15 ways as a sum of consecutive naturals, for example, 112341 + ... + 115798.

It is an arithmetic number, because the mean of its divisors is an integer number (31939600).

Almost surely, 2^394452331 is an apocalyptic number.

394452331 is a deficient number, since it is larger than the sum of its proper divisors (116581269).

394452331 is a wasteful number, since it uses less digits than its factorization.

394452331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228178.

The product of its digits is 38880, while the sum is 34.

The square root of 394452331 is about 19860.8240262080. The cubic root of 394452331 is about 733.3841318576.

The spelling of 394452331 in words is "three hundred ninety-four million, four hundred fifty-two thousand, three hundred thirty-one".