390484 has 12 divisors (see below), whose sum is σ = 700308. Its totient is φ = 190400.

The previous prime is 390479. The next prime is 390487. The reversal of 390484 is 484093.

It can be written as a sum of positive squares in 2 ways, for example, as 6084 + 384400 = 78^2 + 620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390487) by changing a digit.

390484 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (58359).

2³⁹⁰⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

390484 is a deficient number, since it is larger than the sum of its proper divisors (309824).

390484 is a wasteful number, since it uses less digits than its factorization.

390484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2424 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 390484 is about 624.8871898191. The cubic root of 390484 is about 73.0916469515.

The spelling of 390484 in words is "three hundred ninety thousand, four hundred eighty-four".