8001249973 has 2 divisors, whose sum is σ = 8001249974. Its totient is φ = 8001249972.

The previous prime is 8001249953. The next prime is 8001250001. The reversal of 8001249973 is 3799421008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7674110404 + 327139569 = 87602^2 + 18087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8001249973 is a prime.

It is a super-2 number, since 2×8001249973² (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 (8001249953) 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, 4000624986 + 4000624987.

It is an arithmetic number, because the mean of its divisors is an integer number (4000624987).

Almost surely, 2^8001249973 is an apocalyptic number.

It is an amenable number.

8001249973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8001249973 is an equidigital number, since it uses as much as digits as its factorization.

8001249973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 8001249973 is about 89449.7063885623. The cubic root of 8001249973 is about 2000.1041589920.

The spelling of 8001249973 in words is "eight billion, one million, two hundred forty-nine thousand, nine hundred seventy-three".