390193 has 2 divisors, whose sum is σ = 390194. Its totient is φ = 390192.

The previous prime is 390191. The next prime is 390199. The reversal of 390193 is 391093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 166464 = 473^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 390193 - 2¹ = 390191 is a prime.

Together with 390191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (390191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195096 + 195097.

It is an arithmetic number, because the mean of its divisors is an integer number (195097).

2³⁹⁰¹⁹³ is an apocalyptic number.

It is an amenable number.

390193 is a deficient number, since it is larger than the sum of its proper divisors (1).

390193 is an equidigital number, since it uses as much as digits as its factorization.

390193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 390193 is about 624.6543043956. The cubic root of 390193 is about 73.0734857677.

Subtracting 390193 from its reverse (391093), we obtain a square (900 = 30²).

The spelling of 390193 in words is "three hundred ninety thousand, one hundred ninety-three".