440386 has 8 divisors (see below), whose sum is σ = 681984. Its totient is φ = 213060.

The previous prime is 440383. The next prime is 440389. The reversal of 440386 is 683044.

It is an interprime number because it is at equal distance from previous prime (440383) and next prime (440389).

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

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 440386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440383) 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, 3490 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (85248).

2⁴⁴⁰³⁸⁶ is an apocalyptic number.

440386 is a deficient number, since it is larger than the sum of its proper divisors (241598).

440386 is a wasteful number, since it uses less digits than its factorization.

440386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 440386 is about 663.6158527341. The cubic root of 440386 is about 76.0812842243.

It can be divided in two parts, 44038 and 6, that added together give a palindrome (44044).

The spelling of 440386 in words is "four hundred forty thousand, three hundred eighty-six".