390829 has 2 divisors, whose sum is σ = 390830. Its totient is φ = 390828.

The previous prime is 390821. The next prime is 390851. The reversal of 390829 is 928093.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328329 + 62500 = 573^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 390829 - 2³ = 390821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 390829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195414 + 195415.

It is an arithmetic number, because the mean of its divisors is an integer number (195415).

2³⁹⁰⁸²⁹ is an apocalyptic number.

It is an amenable number.

390829 is a deficient number, since it is larger than the sum of its proper divisors (1).

390829 is an equidigital number, since it uses as much as digits as its factorization.

390829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 390829 is about 625.1631786982. The cubic root of 390829 is about 73.1131665659.

The spelling of 390829 in words is "three hundred ninety thousand, eight hundred twenty-nine".