390562 has 4 divisors (see below), whose sum is σ = 585846. Its totient is φ = 195280.

The previous prime is 390553. The next prime is 390581. The reversal of 390562 is 265093.

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

It can be written as a sum of positive squares in only one way, i.e., 231361 + 159201 = 481^2 + 399^2 .

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

390562 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 as a sum of consecutive naturals, namely, 97639 + ... + 97642.

390562 is a Friedman number, since it can be written as 5^(9-2^0)-63, using all its digits and the basic arithmetic operations.

2³⁹⁰⁵⁶² is an apocalyptic number.

390562 is a deficient number, since it is larger than the sum of its proper divisors (195284).

390562 is a wasteful number, since it uses less digits than its factorization.

390562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195283.

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

The square root of 390562 is about 624.9495979677. The cubic root of 390562 is about 73.0965133642.

The spelling of 390562 in words is "three hundred ninety thousand, five hundred sixty-two".