394333333 has 4 divisors (see below), whose sum is σ = 397951180. Its totient is φ = 390715488.

The previous prime is 394333307. The next prime is 394333339. The reversal of 394333333 is 333333493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206698129 + 187635204 = 14377^2 + 13698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394333333 is a prime.

It is a Duffinian number.

394333333 is a modest number, since divided by 33333 gives 3943 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394333339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808760 + ... + 1808977.

It is an arithmetic number, because the mean of its divisors is an integer number (99487795).

Almost surely, 2^394333333 is an apocalyptic number.

It is an amenable number.

394333333 is a deficient number, since it is larger than the sum of its proper divisors (3617847).

394333333 is a wasteful number, since it uses less digits than its factorization.

394333333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617846.

The product of its digits is 78732, while the sum is 34.

The square root of 394333333 is about 19857.8280030823. The cubic root of 394333333 is about 733.3103755669.

The spelling of 394333333 in words is "three hundred ninety-four million, three hundred thirty-three thousand, three hundred thirty-three".