1199955 has 8 divisors (see below), whose sum is σ = 1919952. Its totient is φ = 639968.

The previous prime is 1199953. The next prime is 1199969. The reversal of 1199955 is 5599911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1199955 - 2¹ = 1199953 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1199953) 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 in 7 ways as a sum of consecutive naturals, for example, 39984 + ... + 40013.

It is an arithmetic number, because the mean of its divisors is an integer number (239994).

2^1199955 is an apocalyptic number.

1199955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1199955 is a deficient number, since it is larger than the sum of its proper divisors (719997).

1199955 is an equidigital number, since it uses as much as digits as its factorization.

1199955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80005.

The product of its digits is 18225, while the sum is 39.

The square root of 1199955 is about 1095.4245752219. The cubic root of 1199955 is about 106.2645285784.

The spelling of 1199955 in words is "one million, one hundred ninety-nine thousand, nine hundred fifty-five".