1099619969 has 4 divisors (see below), whose sum is σ = 1256708544. Its totient is φ = 942531396.

The previous prime is 1099619933. The next prime is 1099619971. The reversal of 1099619969 is 9699169901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1099619969 - 2¹² = 1099615873 is a prime.

It is a super-2 number, since 2×1099619969² = 2418328152447121922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1099619069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78544277 + ... + 78544290.

It is an arithmetic number, because the mean of its divisors is an integer number (314177136).

Almost surely, 2^1099619969 is an apocalyptic number.

It is an amenable number.

1099619969 is a deficient number, since it is larger than the sum of its proper divisors (157088575).

1099619969 is an equidigital number, since it uses as much as digits as its factorization.

1099619969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157088574.

The product of its (nonzero) digits is 2125764, while the sum is 59.

The square root of 1099619969 is about 33160.5182257455. The cubic root of 1099619969 is about 1032.1612234471.

The spelling of 1099619969 in words is "one billion, ninety-nine million, six hundred nineteen thousand, nine hundred sixty-nine".