1147199 has 4 divisors (see below), whose sum is σ = 1154664. Its totient is φ = 1139736.

The previous prime is 1147193. The next prime is 1147213. The reversal of 1147199 is 9917411.

It is a happy number.

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 1147199 - 2⁴ = 1147183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147193) 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, 3497 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (288666).

2^1147199 is an apocalyptic number.

1147199 is a deficient number, since it is larger than the sum of its proper divisors (7465).

1147199 is an equidigital number, since it uses as much as digits as its factorization.

1147199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7464.

The product of its digits is 2268, while the sum is 32.

The square root of 1147199 is about 1071.0737602985. The cubic root of 1147199 is about 104.6838259199.

The spelling of 1147199 in words is "one million, one hundred forty-seven thousand, one hundred ninety-nine".