244840894621 has 2 divisors, whose sum is σ = 244840894622. Its totient is φ = 244840894620.

The previous prime is 244840894517. The next prime is 244840894631. The reversal of 244840894621 is 126498048442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244840894596 + 25 = 494814^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244840894621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244840894631) 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 as a sum of consecutive naturals, namely, 122420447310 + 122420447311.

It is an arithmetic number, because the mean of its divisors is an integer number (122420447311).

Almost surely, 2^244840894621 is an apocalyptic number.

It is an amenable number.

244840894621 is a deficient number, since it is larger than the sum of its proper divisors (1).

244840894621 is an equidigital number, since it uses as much as digits as its factorization.

244840894621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3538944, while the sum is 52.

The spelling of 244840894621 in words is "two hundred forty-four billion, eight hundred forty million, eight hundred ninety-four thousand, six hundred twenty-one".