1099170899 has 2 divisors, whose sum is σ = 1099170900. Its totient is φ = 1099170898.

The previous prime is 1099170857. The next prime is 1099170901. The reversal of 1099170899 is 9980719901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1099170899 - 2²⁸ = 830735443 is a prime.

Together with 1099170901, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1099170899.

It is not a weakly prime, because it can be changed into another prime (1099170829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549585449 + 549585450.

It is an arithmetic number, because the mean of its divisors is an integer number (549585450).

Almost surely, 2^1099170899 is an apocalyptic number.

1099170899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099170899 is an equidigital number, since it uses as much as digits as its factorization.

1099170899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 53.

The square root of 1099170899 is about 33153.7463795572. The cubic root of 1099170899 is about 1032.0206973970.

The spelling of 1099170899 in words is "one billion, ninety-nine million, one hundred seventy thousand, eight hundred ninety-nine".