440401 has 8 divisors (see below), whose sum is σ = 499520. Its totient is φ = 384912.

The previous prime is 440399. The next prime is 440431. The reversal of 440401 is 104044.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 440401 - 2¹ = 440399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440431) 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, 645 + ... + 1138.

It is an arithmetic number, because the mean of its divisors is an integer number (62440).

2⁴⁴⁰⁴⁰¹ is an apocalyptic number.

It is an amenable number.

440401 is a deficient number, since it is larger than the sum of its proper divisors (59119).

440401 is a wasteful number, since it uses less digits than its factorization.

440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 440401 is about 663.6271543570. The cubic root of 440401 is about 76.0821480167.

Adding to 440401 its reverse (104044), we get a palindrome (544445).

It can be divided in two parts, 440 and 401, that added together give a square (841 = 29²).

The spelling of 440401 in words is "four hundred forty thousand, four hundred one", and thus it is an iban number.