1099199 has 2 divisors, whose sum is σ = 1099200. Its totient is φ = 1099198.

The previous prime is 1099181. The next prime is 1099223. The reversal of 1099199 is 9919901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1099199 - 2¹⁶ = 1033663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549599 + 549600.

It is an arithmetic number, because the mean of its divisors is an integer number (549600).

2^1099199 is an apocalyptic number.

1099199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099199 is an equidigital number, since it uses as much as digits as its factorization.

1099199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 38.

The square root of 1099199 is about 1048.4269168616. The cubic root of 1099199 is about 103.2029492076.

The spelling of 1099199 in words is "one million, ninety-nine thousand, one hundred ninety-nine".