440280949 has 4 divisors (see below), whose sum is σ = 441126540. Its totient is φ = 439435360.

The previous prime is 440280947. The next prime is 440280959. The reversal of 440280949 is 949082044.

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 166874724 + 273406225 = 12918^2 + 16535^2 .

It is a cyclic number.

It is not a de Polignac number, because 440280949 - 2¹ = 440280947 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440280947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422014 + ... + 423055.

It is an arithmetic number, because the mean of its divisors is an integer number (110281635).

Almost surely, 2^440280949 is an apocalyptic number.

It is an amenable number.

440280949 is a deficient number, since it is larger than the sum of its proper divisors (845591).

440280949 is an equidigital number, since it uses as much as digits as its factorization.

440280949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845590.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 440280949 is about 20982.8727537485. The cubic root of 440280949 is about 760.7523419046.

The spelling of 440280949 in words is "four hundred forty million, two hundred eighty thousand, nine hundred forty-nine".