44949549919 has 2 divisors, whose sum is σ = 44949549920. Its totient is φ = 44949549918.

The previous prime is 44949549917. The next prime is 44949549929. The reversal of 44949549919 is 91994594944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44949549919 - 2¹ = 44949549917 is a prime.

It is a super-2 number, since 2×44949549919² (a number of 22 digits) contains 22 as substring.

Together with 44949549917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44949549917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22474774959 + 22474774960.

It is an arithmetic number, because the mean of its divisors is an integer number (22474774960).

Almost surely, 2^44949549919 is an apocalyptic number.

44949549919 is a deficient number, since it is larger than the sum of its proper divisors (1).

44949549919 is an equidigital number, since it uses as much as digits as its factorization.

44949549919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75582720, while the sum is 67.

The spelling of 44949549919 in words is "forty-four billion, nine hundred forty-nine million, five hundred forty-nine thousand, nine hundred nineteen".