8992391917 has 2 divisors, whose sum is σ = 8992391918. Its totient is φ = 8992391916.

The previous prime is 8992391911. The next prime is 8992391963. The reversal of 8992391917 is 7191932998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8098920036 + 893471881 = 89994^2 + 29891^2 .

It is a cyclic number.

It is not a de Polignac number, because 8992391917 - 2³ = 8992391909 is a prime.

It is a super-2 number, since 2×8992391917² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8992391911) 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, 4496195958 + 4496195959.

It is an arithmetic number, because the mean of its divisors is an integer number (4496195959).

Almost surely, 2^8992391917 is an apocalyptic number.

It is an amenable number.

8992391917 is a deficient number, since it is larger than the sum of its proper divisors (1).

8992391917 is an equidigital number, since it uses as much as digits as its factorization.

8992391917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 58.

The square root of 8992391917 is about 94828.2232091269. The cubic root of 8992391917 is about 2079.4975300231.

The spelling of 8992391917 in words is "eight billion, nine hundred ninety-two million, three hundred ninety-one thousand, nine hundred seventeen".