5449999991 has 2 divisors, whose sum is σ = 5449999992. Its totient is φ = 5449999990.

The previous prime is 5449999967. The next prime is 5450000011. The reversal of 5449999991 is 1999999445.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5449999991 - 2¹⁸ = 5449737847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5449999931) 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, 2724999995 + 2724999996.

It is an arithmetic number, because the mean of its divisors is an integer number (2724999996).

Almost surely, 2^5449999991 is an apocalyptic number.

5449999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5449999991 is an equidigital number, since it uses as much as digits as its factorization.

5449999991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42515280, while the sum is 68.

The square root of 5449999991 is about 73824.1152402113. The cubic root of 5449999991 is about 1759.8088625721.

The spelling of 5449999991 in words is "five billion, four hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-one".