8440895549 has 2 divisors, whose sum is σ = 8440895550. Its totient is φ = 8440895548.

The previous prime is 8440895509. The next prime is 8440895569. The reversal of 8440895549 is 9455980448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5818943524 + 2621952025 = 76282^2 + 51205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8440895549 is a prime.

It is a super-2 number, since 2×8440895549² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8440895494 and 8440895503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8440895509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220447774 + 4220447775.

It is an arithmetic number, because the mean of its divisors is an integer number (4220447775).

Almost surely, 2^8440895549 is an apocalyptic number.

It is an amenable number.

8440895549 is a deficient number, since it is larger than the sum of its proper divisors (1).

8440895549 is an equidigital number, since it uses as much as digits as its factorization.

8440895549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The square root of 8440895549 is about 91874.3465228461. The cubic root of 8440895549 is about 2036.0862702800.

The spelling of 8440895549 in words is "eight billion, four hundred forty million, eight hundred ninety-five thousand, five hundred forty-nine".