1197898399 has 2 divisors, whose sum is σ = 1197898400. Its totient is φ = 1197898398.

The previous prime is 1197898393. The next prime is 1197898459. The reversal of 1197898399 is 9938987911.

It is a weak prime.

It is an emirp because it is prime and its reverse (9938987911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1197898399 - 2⁹ = 1197897887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1197898399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197898393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598949199 + 598949200.

It is an arithmetic number, because the mean of its divisors is an integer number (598949200).

Almost surely, 2^1197898399 is an apocalyptic number.

1197898399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197898399 is an equidigital number, since it uses as much as digits as its factorization.

1197898399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 64.

The square root of 1197898399 is about 34610.6688609163. The cubic root of 1197898399 is about 1062.0378499259.

The spelling of 1197898399 in words is "one billion, one hundred ninety-seven million, eight hundred ninety-eight thousand, three hundred ninety-nine".