1089995699 has 4 divisors (see below), whose sum is σ = 1173841536. Its totient is φ = 1006149864.

The previous prime is 1089995689. The next prime is 1089995707. The reversal of 1089995699 is 9965999801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9965999801 = 283 ⋅35215547.

It is a cyclic number.

It is not a de Polignac number, because 1089995699 - 2¹² = 1089991603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089995639) 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, 41922899 + ... + 41922924.

It is an arithmetic number, because the mean of its divisors is an integer number (293460384).

Almost surely, 2^1089995699 is an apocalyptic number.

1089995699 is a deficient number, since it is larger than the sum of its proper divisors (83845837).

1089995699 is an equidigital number, since it uses as much as digits as its factorization.

1089995699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83845836.

The product of its (nonzero) digits is 14171760, while the sum is 65.

The square root of 1089995699 is about 33015.0829016073. The cubic root of 1089995699 is about 1029.1411129484.

The spelling of 1089995699 in words is "one billion, eighty-nine million, nine hundred ninety-five thousand, six hundred ninety-nine".