393842133 has 12 divisors (see below), whose sum is σ = 593617440. Its totient is φ = 251145576.

The previous prime is 393842131. The next prime is 393842161. The reversal of 393842133 is 331248393.

It is not a de Polignac number, because 393842133 - 2¹ = 393842131 is a prime.

It is a super-2 number, since 2×393842133² = 310223251451979378, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393842131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 951103 + ... + 951516.

It is an arithmetic number, because the mean of its divisors is an integer number (49468120).

Almost surely, 2^393842133 is an apocalyptic number.

It is an amenable number.

393842133 is a deficient number, since it is larger than the sum of its proper divisors (199775307).

393842133 is a wasteful number, since it uses less digits than its factorization.

393842133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902648 (or 1902645 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 393842133 is about 19845.4562305834. The cubic root of 393842133 is about 733.0057671798.

The spelling of 393842133 in words is "three hundred ninety-three million, eight hundred forty-two thousand, one hundred thirty-three".