393320189 has 2 divisors, whose sum is σ = 393320190. Its totient is φ = 393320188.

The previous prime is 393320113. The next prime is 393320201. The reversal of 393320189 is 981023393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207216025 + 186104164 = 14395^2 + 13642^2 .

It is a cyclic number.

It is not a de Polignac number, because 393320189 - 2²⁴ = 376542973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393320089) by changing a digit.

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 as a sum of consecutive naturals, namely, 196660094 + 196660095.

It is an arithmetic number, because the mean of its divisors is an integer number (196660095).

Almost surely, 2^393320189 is an apocalyptic number.

It is an amenable number.

393320189 is a deficient number, since it is larger than the sum of its proper divisors (1).

393320189 is an equidigital number, since it uses as much as digits as its factorization.

393320189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 393320189 is about 19832.3016566409. The cubic root of 393320189 is about 732.6818158092.

The spelling of 393320189 in words is "three hundred ninety-three million, three hundred twenty thousand, one hundred eighty-nine".