1099997705 has 4 divisors (see below), whose sum is σ = 1319997252. Its totient is φ = 879998160.

The previous prime is 1099997693. The next prime is 1099997719. The reversal of 1099997705 is 5077999901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 431309824 + 668687881 = 20768^2 + 25859^2 .

It is not a de Polignac number, because 1099997705 - 2⁸ = 1099997449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109999766 + ... + 109999775.

It is an arithmetic number, because the mean of its divisors is an integer number (329999313).

Almost surely, 2^1099997705 is an apocalyptic number.

It is an amenable number.

1099997705 is a deficient number, since it is larger than the sum of its proper divisors (219999547).

1099997705 is an equidigital number, since it uses as much as digits as its factorization.

1099997705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219999546.

The product of its (nonzero) digits is 1607445, while the sum is 56.

The square root of 1099997705 is about 33166.2133051092. The cubic root of 1099997705 is about 1032.2793975520.

The spelling of 1099997705 in words is "one billion, ninety-nine million, nine hundred ninety-seven thousand, seven hundred five".