390004 has 6 divisors (see below), whose sum is σ = 682514. Its totient is φ = 195000.

The previous prime is 390001. The next prime is 390043. The reversal of 390004 is 400093.

It can be written as a sum of positive squares in only one way, i.e., 357604 + 32400 = 598^2 + 180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 390004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48747 + ... + 48754.

2³⁹⁰⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

390004 is a deficient number, since it is larger than the sum of its proper divisors (292510).

390004 is a wasteful number, since it uses less digits than its factorization.

390004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97505 (or 97503 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 390004 is about 624.5030023947. The cubic root of 390004 is about 73.0616855225.

Adding to 390004 its reverse (400093), we get a palindrome (790097).

The spelling of 390004 in words is "three hundred ninety thousand, four".