43444513249 has 2 divisors, whose sum is σ = 43444513250. Its totient is φ = 43444513248.

The previous prime is 43444513243. The next prime is 43444513261. The reversal of 43444513249 is 94231544434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28886401600 + 14558111649 = 169960^2 + 120657^2 .

It is a cyclic number.

It is not a de Polignac number, because 43444513249 - 2¹⁵ = 43444480481 is a prime.

It is not a weakly prime, because it can be changed into another prime (43444513243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21722256624 + 21722256625.

It is an arithmetic number, because the mean of its divisors is an integer number (21722256625).

Almost surely, 2^43444513249 is an apocalyptic number.

It is an amenable number.

43444513249 is a deficient number, since it is larger than the sum of its proper divisors (1).

43444513249 is an equidigital number, since it uses as much as digits as its factorization.

43444513249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 43.

The spelling of 43444513249 in words is "forty-three billion, four hundred forty-four million, five hundred thirteen thousand, two hundred forty-nine".