84448440749 has 2 divisors, whose sum is σ = 84448440750. Its totient is φ = 84448440748.

The previous prime is 84448440731. The next prime is 84448440773. The reversal of 84448440749 is 94704484448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61923834025 + 22524606724 = 248845^2 + 150082^2 .

It is a cyclic number.

It is not a de Polignac number, because 84448440749 - 2²⁰ = 84447392173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84448440694 and 84448440703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84448440449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42224220374 + 42224220375.

It is an arithmetic number, because the mean of its divisors is an integer number (42224220375).

Almost surely, 2^84448440749 is an apocalyptic number.

It is an amenable number.

84448440749 is a deficient number, since it is larger than the sum of its proper divisors (1).

84448440749 is an equidigital number, since it uses as much as digits as its factorization.

84448440749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16515072, while the sum is 56.

The spelling of 84448440749 in words is "eighty-four billion, four hundred forty-eight million, four hundred forty thousand, seven hundred forty-nine".