394146933 has 4 divisors (see below), whose sum is σ = 525529248. Its totient is φ = 262764620.

The previous prime is 394146923. The next prime is 394146937. The reversal of 394146933 is 339641493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 394146933 - 2⁸ = 394146677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394146937) 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, 65691153 + ... + 65691158.

It is an arithmetic number, because the mean of its divisors is an integer number (131382312).

Almost surely, 2^394146933 is an apocalyptic number.

It is an amenable number.

394146933 is a deficient number, since it is larger than the sum of its proper divisors (131382315).

394146933 is a wasteful number, since it uses less digits than its factorization.

394146933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131382314.

The product of its digits is 209952, while the sum is 42.

The square root of 394146933 is about 19853.1340850758. The cubic root of 394146933 is about 733.1948129318.

The spelling of 394146933 in words is "three hundred ninety-four million, one hundred forty-six thousand, nine hundred thirty-three".