244624861 has 4 divisors (see below), whose sum is σ = 263442172. Its totient is φ = 225807552.

The previous prime is 244624847. The next prime is 244624903. The reversal of 244624861 is 168426442.

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 50552100 + 194072761 = 7110^2 + 13931^2 .

It is a cyclic number.

It is not a de Polignac number, because 244624861 - 2¹⁵ = 244592093 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 244624861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244624811) 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, 9408636 + ... + 9408661.

It is an arithmetic number, because the mean of its divisors is an integer number (65860543).

Almost surely, 2^244624861 is an apocalyptic number.

It is an amenable number.

244624861 is a deficient number, since it is larger than the sum of its proper divisors (18817311).

244624861 is a wasteful number, since it uses less digits than its factorization.

244624861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18817310.

The product of its digits is 73728, while the sum is 37.

The square root of 244624861 is about 15640.4878760223. The cubic root of 244624861 is about 625.4129418264.

The spelling of 244624861 in words is "two hundred forty-four million, six hundred twenty-four thousand, eight hundred sixty-one".