393234091 has 4 divisors (see below), whose sum is σ = 393508800. Its totient is φ = 392959384.

The previous prime is 393234073. The next prime is 393234161. The reversal of 393234091 is 190432393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190432393 = 1613 ⋅118061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393234091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393234001) 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, 135196 + ... + 138073.

It is an arithmetic number, because the mean of its divisors is an integer number (98377200).

Almost surely, 2^393234091 is an apocalyptic number.

393234091 is a deficient number, since it is larger than the sum of its proper divisors (274709).

393234091 is a wasteful number, since it uses less digits than its factorization.

393234091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274708.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 393234091 is about 19830.1308871122. The cubic root of 393234091 is about 732.6283504272.

The spelling of 393234091 in words is "three hundred ninety-three million, two hundred thirty-four thousand, ninety-one".