394407193 has 8 divisors (see below), whose sum is σ = 396624512. Its totient is φ = 392196816.

The previous prime is 394407179. The next prime is 394407227. The reversal of 394407193 is 391704493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394407193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394404193) 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, 144346 + ... + 147052.

It is an arithmetic number, because the mean of its divisors is an integer number (49578064).

Almost surely, 2^394407193 is an apocalyptic number.

It is an amenable number.

394407193 is a deficient number, since it is larger than the sum of its proper divisors (2217319).

394407193 is a wasteful number, since it uses less digits than its factorization.

394407193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 394407193 is about 19859.6876360128. The cubic root of 394407193 is about 733.3561565670.

The spelling of 394407193 in words is "three hundred ninety-four million, four hundred seven thousand, one hundred ninety-three".