390207 has 4 divisors (see below), whose sum is σ = 520280. Its totient is φ = 260136.

The previous prime is 390199. The next prime is 390209. The reversal of 390207 is 702093.

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

It is not a de Polignac number, because 390207 - 2³ = 390199 is a prime.

It is a D-number.

It is a Duffinian number.

390207 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390207.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65032 + ... + 65037.

It is an arithmetic number, because the mean of its divisors is an integer number (130070).

2³⁹⁰²⁰⁷ is an apocalyptic number.

390207 is a deficient number, since it is larger than the sum of its proper divisors (130073).

390207 is a wasteful number, since it uses less digits than its factorization.

390207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130072.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 390207 is about 624.6655104934. The cubic root of 390207 is about 73.0743597084.

The spelling of 390207 in words is "three hundred ninety thousand, two hundred seven".