1205799 has 16 divisors (see below), whose sum is σ = 1867008. Its totient is φ = 677952.

The previous prime is 1205779. The next prime is 1205819. The reversal of 1205799 is 9975021.

It is an interprime number because it is at equal distance from previous prime (1205779) and next prime (1205819).

It is not a de Polignac number, because 1205799 - 2⁵ = 1205767 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 979 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (116688).

2^1205799 is an apocalyptic number.

1205799 is a deficient number, since it is larger than the sum of its proper divisors (661209).

1205799 is an equidigital number, since it uses as much as digits as its factorization.

1205799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 1205799 is about 1098.0887942239. The cubic root of 1205799 is about 106.4367585037.

The spelling of 1205799 in words is "one million, two hundred five thousand, seven hundred ninety-nine".