8766491869 has 2 divisors, whose sum is σ = 8766491870. Its totient is φ = 8766491868.

The previous prime is 8766491689. The next prime is 8766491897. The reversal of 8766491869 is 9681946678.

It is a happy number.

Together with previous prime (8766491689) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8147228644 + 619263225 = 90262^2 + 24885^2 .

It is a cyclic number.

It is not a de Polignac number, because 8766491869 - 2¹⁵ = 8766459101 is a prime.

It is a super-2 number, since 2×8766491869² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8766491869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8766492869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4383245934 + 4383245935.

It is an arithmetic number, because the mean of its divisors is an integer number (4383245935).

Almost surely, 2^8766491869 is an apocalyptic number.

It is an amenable number.

8766491869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8766491869 is an equidigital number, since it uses as much as digits as its factorization.

8766491869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 64.

The square root of 8766491869 is about 93629.5459190100. The cubic root of 8766491869 is about 2061.9364601982.

The spelling of 8766491869 in words is "eight billion, seven hundred sixty-six million, four hundred ninety-one thousand, eight hundred sixty-nine".