44431331449 has 2 divisors, whose sum is σ = 44431331450. Its totient is φ = 44431331448.

The previous prime is 44431331447. The next prime is 44431331479. The reversal of 44431331449 is 94413313444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30889820025 + 13541511424 = 175755^2 + 116368^2 .

It is a cyclic number.

It is not a de Polignac number, because 44431331449 - 2¹ = 44431331447 is a prime.

Together with 44431331447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44431331447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22215665724 + 22215665725.

It is an arithmetic number, because the mean of its divisors is an integer number (22215665725).

Almost surely, 2^44431331449 is an apocalyptic number.

It is an amenable number.

44431331449 is a deficient number, since it is larger than the sum of its proper divisors (1).

44431331449 is an equidigital number, since it uses as much as digits as its factorization.

44431331449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 40.

The spelling of 44431331449 in words is "forty-four billion, four hundred thirty-one million, three hundred thirty-one thousand, four hundred forty-nine".