8539764197 has 2 divisors, whose sum is σ = 8539764198. Its totient is φ = 8539764196.

The previous prime is 8539764161. The next prime is 8539764251. The reversal of 8539764197 is 7914679358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6095549476 + 2444214721 = 78074^2 + 49439^2 .

It is a cyclic number.

It is not a de Polignac number, because 8539764197 - 2¹² = 8539760101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8539764397) 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, 4269882098 + 4269882099.

It is an arithmetic number, because the mean of its divisors is an integer number (4269882099).

Almost surely, 2^8539764197 is an apocalyptic number.

It is an amenable number.

8539764197 is a deficient number, since it is larger than the sum of its proper divisors (1).

8539764197 is an equidigital number, since it uses as much as digits as its factorization.

8539764197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 59.

The square root of 8539764197 is about 92410.8445854706. The cubic root of 8539764197 is about 2044.0050274302.

The spelling of 8539764197 in words is "eight billion, five hundred thirty-nine million, seven hundred sixty-four thousand, one hundred ninety-seven".