9774197999 has 2 divisors, whose sum is σ = 9774198000. Its totient is φ = 9774197998.

The previous prime is 9774197959. The next prime is 9774198023. The reversal of 9774197999 is 9997914779.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9774197999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9774197959) 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, 4887098999 + 4887099000.

It is an arithmetic number, because the mean of its divisors is an integer number (4887099000).

Almost surely, 2^9774197999 is an apocalyptic number.

9774197999 is a deficient number, since it is larger than the sum of its proper divisors (1).

9774197999 is an equidigital number, since it uses as much as digits as its factorization.

9774197999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81015228, while the sum is 71.

The square root of 9774197999 is about 98864.5436898386. The cubic root of 9774197999 is about 2138.0952276136.

The spelling of 9774197999 in words is "nine billion, seven hundred seventy-four million, one hundred ninety-seven thousand, nine hundred ninety-nine".