8691075049 has 2 divisors, whose sum is σ = 8691075050. Its totient is φ = 8691075048.

The previous prime is 8691075037. The next prime is 8691075073. The reversal of 8691075049 is 9405701968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8427240000 + 263835049 = 91800^2 + 16243^2 .

It is a cyclic number.

It is not a de Polignac number, because 8691075049 - 2⁷ = 8691074921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8691074993 and 8691075011.

It is not a weakly prime, because it can be changed into another prime (8691075089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4345537524 + 4345537525.

It is an arithmetic number, because the mean of its divisors is an integer number (4345537525).

Almost surely, 2^8691075049 is an apocalyptic number.

It is an amenable number.

8691075049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8691075049 is an equidigital number, since it uses as much as digits as its factorization.

8691075049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 8691075049 is about 93225.9354954403. The cubic root of 8691075049 is about 2056.0065791380.

The spelling of 8691075049 in words is "eight billion, six hundred ninety-one million, seventy-five thousand, forty-nine".