390206 has 4 divisors (see below), whose sum is σ = 585312. Its totient is φ = 195102.

The previous prime is 390199. The next prime is 390209. The reversal of 390206 is 602093.

It is a happy number.

390206 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390209) by changing a digit.

390206 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97550 + ... + 97553.

It is an arithmetic number, because the mean of its divisors is an integer number (146328).

2³⁹⁰²⁰⁶ is an apocalyptic number.

390206 is a deficient number, since it is larger than the sum of its proper divisors (195106).

390206 is a wasteful number, since it uses less digits than its factorization.

390206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195105.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 390206 is about 624.6647100645. The cubic root of 390206 is about 73.0742972847.

Adding to 390206 its reverse (602093), we get a palindrome (992299).

It can be divided in two parts, 3 and 90206, that added together give a palindrome (90209).

The spelling of 390206 in words is "three hundred ninety thousand, two hundred six".