394349945 has 16 divisors (see below), whose sum is σ = 525984192. Its totient is φ = 281386560.

The previous prime is 394349929. The next prime is 394349951. The reversal of 394349945 is 549943493.

It is not a de Polignac number, because 394349945 - 2⁴ = 394349929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394349893 and 394349902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64727 + ... + 70556.

It is an arithmetic number, because the mean of its divisors is an integer number (32874012).

Almost surely, 2^394349945 is an apocalyptic number.

It is an amenable number.

394349945 is a deficient number, since it is larger than the sum of its proper divisors (131634247).

394349945 is a wasteful number, since it uses less digits than its factorization.

394349945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135352.

The product of its digits is 2099520, while the sum is 50.

The square root of 394349945 is about 19858.2462720151. The cubic root of 394349945 is about 733.3206727612.

The spelling of 394349945 in words is "three hundred ninety-four million, three hundred forty-nine thousand, nine hundred forty-five".