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1199 = 11109

1199 has 4 divisors (see below), whose sum is σ = 1320. Its totient is φ = 1080.

The previous prime is 1193. The next prime is 1201. The reversal of 1199 is 9911.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1199 is a prime.

1199 is a modest number, since divided by 99 gives 11 as remainder.

It is a plaindrome in base 8, base 10 and base 16.

It is a nialpdrome in base 7.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44 + ... + 65.

It is an arithmetic number, because the mean of its divisors is an integer number (330).

21199 is an apocalyptic number.

1199 is a deficient number, since it is larger than the sum of its proper divisors (121).

1199 is a wasteful number, since it uses less digits than its factorization.

1199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120.

The product of its digits is 81, while the sum is 20.

The square root of 1199 is about 34.6265793864. The cubic root of 1199 is about 10.6236330421.

It can be divided in two parts, 119 and 9, that added together give a 7-th power (128 = 27).

The spelling of 1199 in words is "one thousand, one hundred ninety-nine".

Divisors: 1 11 109 1199