394095644 has 24 divisors (see below), whose sum is σ = 730002000. Its totient is φ = 185639040.

The previous prime is 394095643. The next prime is 394095661. The reversal of 394095644 is 446590493.

It is a happy number.

It is a super-2 number, since 2×394095644² = 310622753239549472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 394095595 and 394095604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394095643) 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, 569 + ... + 28080.

It is an arithmetic number, because the mean of its divisors is an integer number (30416750).

Almost surely, 2^394095644 is an apocalyptic number.

It is an amenable number.

394095644 is a deficient number, since it is larger than the sum of its proper divisors (335906356).

394095644 is a wasteful number, since it uses less digits than its factorization.

394095644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28853 (or 28851 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 394095644 is about 19851.8423326401. The cubic root of 394095644 is about 733.1630088364.

The spelling of 394095644 in words is "three hundred ninety-four million, ninety-five thousand, six hundred forty-four".