1199089 has 2 divisors, whose sum is σ = 1199090. Its totient is φ = 1199088.

The previous prime is 1199087. The next prime is 1199117. The reversal of 1199089 is 9809911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199025 + 64 = 1095^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 1199089 - 2¹ = 1199087 is a prime.

Together with 1199087, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1199083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599544 + 599545.

It is an arithmetic number, because the mean of its divisors is an integer number (599545).

2^1199089 is an apocalyptic number.

It is an amenable number.

1199089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199089 is an equidigital number, since it uses as much as digits as its factorization.

1199089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 1199089 is about 1095.0292233543. The cubic root of 1199089 is about 106.2389589450.

The spelling of 1199089 in words is "one million, one hundred ninety-nine thousand, eighty-nine".