390265 has 8 divisors (see below), whose sum is σ = 474120. Its totient is φ = 308352.

The previous prime is 390263. The next prime is 390281. The reversal of 390265 is 562093.

It can be written as a sum of positive squares in 4 ways, for example, as 44521 + 345744 = 211^2 + 588^2 .

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 390265 - 2¹ = 390263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7 + ... + 883.

It is an arithmetic number, because the mean of its divisors is an integer number (59265).

2³⁹⁰²⁶⁵ is an apocalyptic number.

It is an amenable number.

390265 is a deficient number, since it is larger than the sum of its proper divisors (83855).

390265 is an equidigital number, since it uses as much as digits as its factorization.

390265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 390265 is about 624.7119336142. The cubic root of 390265 is about 73.0779800969.

The spelling of 390265 in words is "three hundred ninety thousand, two hundred sixty-five".