440819 has 4 divisors (see below), whose sum is σ = 464040. Its totient is φ = 417600.

The previous prime is 440809. The next prime is 440821. The reversal of 440819 is 918044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440819 - 2¹⁶ = 375283 is a prime.

It is a super-2 number, since 2×440819² = 388642781522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11582 + ... + 11619.

It is an arithmetic number, because the mean of its divisors is an integer number (116010).

2⁴⁴⁰⁸¹⁹ is an apocalyptic number.

440819 is a deficient number, since it is larger than the sum of its proper divisors (23221).

440819 is a wasteful number, since it uses less digits than its factorization.

440819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23220.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 440819 is about 663.9420155405. The cubic root of 440819 is about 76.1062111483.

The spelling of 440819 in words is "four hundred forty thousand, eight hundred nineteen".