1099448771 has 2 divisors, whose sum is σ = 1099448772. Its totient is φ = 1099448770.

The previous prime is 1099448723. The next prime is 1099448797. The reversal of 1099448771 is 1778449901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1099448771 - 2¹⁴ = 1099432387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099448071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549724385 + 549724386.

It is an arithmetic number, because the mean of its divisors is an integer number (549724386).

Almost surely, 2^1099448771 is an apocalyptic number.

1099448771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099448771 is an equidigital number, since it uses as much as digits as its factorization.

1099448771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 1099448771 is about 33157.9367723627. The cubic root of 1099448771 is about 1032.1076555136.

The spelling of 1099448771 in words is "one billion, ninety-nine million, four hundred forty-eight thousand, seven hundred seventy-one".