394349228 has 24 divisors (see below), whose sum is σ = 849368352. Its totient is φ = 156006144.

The previous prime is 394349227. The next prime is 394349239. The reversal of 394349228 is 822943493.

It is a super-3 number, since 3×394349228³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (394349227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 541325 + ... + 542052.

It is an arithmetic number, because the mean of its divisors is an integer number (35390348).

Almost surely, 2^394349228 is an apocalyptic number.

It is an amenable number.

394349228 is an abundant number, since it is smaller than the sum of its proper divisors (455019124).

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

394349228 is a wasteful number, since it uses less digits than its factorization.

394349228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083401 (or 1083399 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 394349228 is about 19858.2282190532. The cubic root of 394349228 is about 733.3202283241.

The spelling of 394349228 in words is "three hundred ninety-four million, three hundred forty-nine thousand, two hundred twenty-eight".