244664426 has 4 divisors (see below), whose sum is σ = 366996642. Its totient is φ = 122332212.

The previous prime is 244664423. The next prime is 244664437. The reversal of 244664426 is 624466442.

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

It can be written as a sum of positive squares in only one way, i.e., 225750625 + 18913801 = 15025^2 + 4349^2 .

It is a super-3 number, since 3×244664426³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 244664426.

It is not an unprimeable number, because it can be changed into a prime (244664423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61166105 + ... + 61166108.

Almost surely, 2^244664426 is an apocalyptic number.

244664426 is a deficient number, since it is larger than the sum of its proper divisors (122332216).

244664426 is a wasteful number, since it uses less digits than its factorization.

244664426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122332215.

The product of its digits is 221184, while the sum is 38.

The square root of 244664426 is about 15641.7526511577. The cubic root of 244664426 is about 625.4466575725.

The spelling of 244664426 in words is "two hundred forty-four million, six hundred sixty-four thousand, four hundred twenty-six".