440244001 has 4 divisors (see below), whose sum is σ = 442525252. Its totient is φ = 437962752.

The previous prime is 440243987. The next prime is 440244037. The reversal of 440244001 is 100442044.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127803025 + 312440976 = 11305^2 + 17676^2 .

It is a cyclic number.

It is not a de Polignac number, because 440244001 - 2⁷ = 440243873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440244001.

It is not an unprimeable number, because it can be changed into a prime (440244061) 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, 1140336 + ... + 1140721.

It is an arithmetic number, because the mean of its divisors is an integer number (110631313).

Almost surely, 2^440244001 is an apocalyptic number.

It is an amenable number.

440244001 is a deficient number, since it is larger than the sum of its proper divisors (2281251).

440244001 is a wasteful number, since it uses less digits than its factorization.

440244001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281250.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 440244001 is about 20981.9923029249. The cubic root of 440244001 is about 760.7310607478.

Adding to 440244001 its reverse (100442044), we get a palindrome (540686045).

The spelling of 440244001 in words is "four hundred forty million, two hundred forty-four thousand, one".