390441 has 4 divisors (see below), whose sum is σ = 520592. Its totient is φ = 260292.

The previous prime is 390437. The next prime is 390449. The reversal of 390441 is 144093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 390441 - 2² = 390437 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65071 + ... + 65076.

It is an arithmetic number, because the mean of its divisors is an integer number (130148).

2³⁹⁰⁴⁴¹ is an apocalyptic number.

It is an amenable number.

390441 is a deficient number, since it is larger than the sum of its proper divisors (130151).

390441 is a wasteful number, since it uses less digits than its factorization.

390441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130150.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 390441 is about 624.8527826616. The cubic root of 390441 is about 73.0889639084.

The spelling of 390441 in words is "three hundred ninety thousand, four hundred forty-one".