394242785 has 8 divisors (see below), whose sum is σ = 479080320. Its totient is φ = 311401584.

The previous prime is 394242773. The next prime is 394242829. The reversal of 394242785 is 587242493.

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

It is a cyclic number.

It is not a de Polignac number, because 394242785 - 2⁴ = 394242769 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498647 + ... + 499436.

It is an arithmetic number, because the mean of its divisors is an integer number (59885040).

Almost surely, 2^394242785 is an apocalyptic number.

It is an amenable number.

394242785 is a deficient number, since it is larger than the sum of its proper divisors (84837535).

394242785 is an equidigital number, since it uses as much as digits as its factorization.

394242785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998167.

The product of its digits is 483840, while the sum is 44.

The square root of 394242785 is about 19855.5479652414. The cubic root of 394242785 is about 733.2542429626.

The spelling of 394242785 in words is "three hundred ninety-four million, two hundred forty-two thousand, seven hundred eighty-five".