390430 has 8 divisors (see below), whose sum is σ = 702792. Its totient is φ = 156168.

The previous prime is 390421. The next prime is 390433. The reversal of 390430 is 34093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 390398 and 390407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390433) by changing a digit.

390430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19512 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (87849).

2³⁹⁰⁴³⁰ is an apocalyptic number.

390430 is a deficient number, since it is larger than the sum of its proper divisors (312362).

390430 is a wasteful number, since it uses less digits than its factorization.

390430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39050.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 390430 is about 624.8439805263. The cubic root of 390430 is about 73.0882775169.

It can be divided in two parts, 390 and 430, that added together give a triangular number (820 = T₄₀).

The spelling of 390430 in words is "three hundred ninety thousand, four hundred thirty".