390239 has 8 divisors (see below), whose sum is σ = 410400. Its totient is φ = 370656.

The previous prime is 390223. The next prime is 390263. The reversal of 390239 is 932093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390239 - 2⁴ = 390223 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1862 + ... + 2060.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2³⁹⁰²³⁹ is an apocalyptic number.

390239 is a deficient number, since it is larger than the sum of its proper divisors (20161).

390239 is a wasteful number, since it uses less digits than its factorization.

390239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 390239 is about 624.6911236763. The cubic root of 390239 is about 73.0763572085.

The spelling of 390239 in words is "three hundred ninety thousand, two hundred thirty-nine".