390329 has 4 divisors (see below), whose sum is σ = 394020. Its totient is φ = 386640.

The previous prime is 390323. The next prime is 390343. The reversal of 390329 is 923093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923093 = 761 ⋅1213.

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 76729 = 560^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 390329 - 2¹² = 386233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390298 and 390307.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390329.

It is not an unprimeable number, because it can be changed into a prime (390323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682 + ... + 1899.

It is an arithmetic number, because the mean of its divisors is an integer number (98505).

2³⁹⁰³²⁹ is an apocalyptic number.

It is an amenable number.

390329 is a deficient number, since it is larger than the sum of its proper divisors (3691).

390329 is a wasteful number, since it uses less digits than its factorization.

390329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 390329 is about 624.7631551236. The cubic root of 390329 is about 73.0819745922.

The spelling of 390329 in words is "three hundred ninety thousand, three hundred twenty-nine".