244312405 has 4 divisors (see below), whose sum is σ = 293174892. Its totient is φ = 195449920.

The previous prime is 244312403. The next prime is 244312421. The reversal of 244312405 is 504213442.

It is a happy number.

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 30041361 + 214271044 = 5481^2 + 14638^2 .

It is not a de Polignac number, because 244312405 - 2¹ = 244312403 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 244312405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244312403) 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, 24431236 + ... + 24431245.

It is an arithmetic number, because the mean of its divisors is an integer number (73293723).

Almost surely, 2^244312405 is an apocalyptic number.

It is an amenable number.

244312405 is a deficient number, since it is larger than the sum of its proper divisors (48862487).

244312405 is an equidigital number, since it uses as much as digits as its factorization.

244312405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48862486.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 244312405 is about 15630.4959934098. The cubic root of 244312405 is about 625.1465512337.

Adding to 244312405 its reverse (504213442), we get a palindrome (748525847).

The spelling of 244312405 in words is "two hundred forty-four million, three hundred twelve thousand, four hundred five".