390653 has 2 divisors, whose sum is σ = 390654.
Its totient is φ = 390652.
The previous prime is 390647. The next prime is 390671. The reversal of 390653 is 356093.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 375769 + 14884 = 613^2 + 122^2
It is an emirp because it is prime and its reverse (356093) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 390653 - 210 = 389629 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (390673) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195326 + 195327.
It is an arithmetic number, because the mean of its divisors is an integer number (195327).
2390653 is an apocalyptic number.
It is an amenable number.
390653 is a deficient number, since it is larger than the sum of its proper divisors (1).
390653 is an equidigital number, since it uses as much as digits as its factorization.
390653 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2430, while the sum is 26.
The square root of 390653 is about 625.0223995986.
The cubic root of 390653 is about 73.1021900269.
The spelling of 390653 in words is "three hundred ninety thousand, six hundred fifty-three".