1199859 has 4 divisors (see below), whose sum is σ = 1599816. Its totient is φ = 799904.

The previous prime is 1199857. The next prime is 1199879. The reversal of 1199859 is 9589911.

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

It is a cyclic number.

It is not a de Polignac number, because 1199859 - 2¹ = 1199857 is a prime.

It is an Ulam number.

It is a D-number.

1199859 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1199859.

It is not an unprimeable number, because it can be changed into a prime (1199851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199974 + ... + 199979.

It is an arithmetic number, because the mean of its divisors is an integer number (399954).

2^1199859 is an apocalyptic number.

1199859 is a deficient number, since it is larger than the sum of its proper divisors (399957).

1199859 is an equidigital number, since it uses as much as digits as its factorization.

1199859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399956.

The product of its digits is 29160, while the sum is 42.

The square root of 1199859 is about 1095.3807557192. The cubic root of 1199859 is about 106.2616946758.

The spelling of 1199859 in words is "one million, one hundred ninety-nine thousand, eight hundred fifty-nine".