244440447 has 4 divisors (see below), whose sum is σ = 325920600. Its totient is φ = 162960296.

The previous prime is 244440437. The next prime is 244440451. The reversal of 244440447 is 744044442.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244440447 is a prime.

It is a super-2 number, since 2×244440447² = 119502264259119618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244440437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40740072 + ... + 40740077.

It is an arithmetic number, because the mean of its divisors is an integer number (81480150).

Almost surely, 2^244440447 is an apocalyptic number.

244440447 is a deficient number, since it is larger than the sum of its proper divisors (81480153).

244440447 is an equidigital number, since it uses as much as digits as its factorization.

244440447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81480152.

The product of its (nonzero) digits is 57344, while the sum is 33.

The square root of 244440447 is about 15634.5913601859. The cubic root of 244440447 is about 625.2557434449.

Adding to 244440447 its reverse (744044442), we get a palindrome (988484889).

The spelling of 244440447 in words is "two hundred forty-four million, four hundred forty thousand, four hundred forty-seven".