1198591447 has 2 divisors, whose sum is σ = 1198591448. Its totient is φ = 1198591446.

The previous prime is 1198591403. The next prime is 1198591529. The reversal of 1198591447 is 7441958911.

It is a weak prime.

It is an emirp because it is prime and its reverse (7441958911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1198591447 - 2⁷ = 1198591319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1198591447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198561447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599295723 + 599295724.

It is an arithmetic number, because the mean of its divisors is an integer number (599295724).

Almost surely, 2^1198591447 is an apocalyptic number.

1198591447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198591447 is an equidigital number, since it uses as much as digits as its factorization.

1198591447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The square root of 1198591447 is about 34620.6794705130. The cubic root of 1198591447 is about 1062.2426255862.

The spelling of 1198591447 in words is "one billion, one hundred ninety-eight million, five hundred ninety-one thousand, four hundred forty-seven".