390418 has 16 divisors (see below), whose sum is σ = 679680. Its totient is φ = 164736.

The previous prime is 390413. The next prime is 390419. The reversal of 390418 is 814093.

It is a junction number, because it is equal to n+sod(n) for n = 390392 and 390401.

It is not an unprimeable number, because it can be changed into a prime (390413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930 + ... + 1282.

It is an arithmetic number, because the mean of its divisors is an integer number (42480).

2³⁹⁰⁴¹⁸ is an apocalyptic number.

390418 is a deficient number, since it is larger than the sum of its proper divisors (289262).

390418 is a wasteful number, since it uses less digits than its factorization.

390418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 390418 is about 624.8343780555. The cubic root of 390418 is about 73.0875287115.

It can be divided in two parts, 390 and 418, that added together give a palindrome (808).

The spelling of 390418 in words is "three hundred ninety thousand, four hundred eighteen".