1198847 has 4 divisors (see below), whose sum is σ = 1291080. Its totient is φ = 1106616.

The previous prime is 1198819. The next prime is 1198849. The reversal of 1198847 is 7488911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7488911 = 37 ⋅202403.

It is a cyclic number.

It is not a de Polignac number, because 1198847 - 2¹² = 1194751 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1198847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46097 + ... + 46122.

It is an arithmetic number, because the mean of its divisors is an integer number (322770).

2^1198847 is an apocalyptic number.

1198847 is a deficient number, since it is larger than the sum of its proper divisors (92233).

1198847 is an equidigital number, since it uses as much as digits as its factorization.

1198847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92232.

The product of its digits is 16128, while the sum is 38.

The square root of 1198847 is about 1094.9187184444. The cubic root of 1198847 is about 106.2318114194.

Subtracting 1198847 from its reverse (7488911), we obtain a square (6290064 = 2508²).

The spelling of 1198847 in words is "one million, one hundred ninety-eight thousand, eight hundred forty-seven".