244444661 has 4 divisors (see below), whose sum is σ = 247793292. Its totient is φ = 241096032.

The previous prime is 244444657. The next prime is 244444687. The reversal of 244444661 is 166444442.

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 88943761 + 155500900 = 9431^2 + 12470^2 .

It is a cyclic number.

It is not a de Polignac number, because 244444661 - 2² = 244444657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244444601) 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, 1674206 + ... + 1674351.

It is an arithmetic number, because the mean of its divisors is an integer number (61948323).

Almost surely, 2^244444661 is an apocalyptic number.

It is an amenable number.

244444661 is a deficient number, since it is larger than the sum of its proper divisors (3348631).

244444661 is an equidigital number, since it uses as much as digits as its factorization.

244444661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348630.

The product of its digits is 73728, while the sum is 35.

The square root of 244444661 is about 15634.7261248798. The cubic root of 244444661 is about 625.2593364298.

The spelling of 244444661 in words is "two hundred forty-four million, four hundred forty-four thousand, six hundred sixty-one".