8888001281 has 2 divisors, whose sum is σ = 8888001282. Its totient is φ = 8888001280.

The previous prime is 8888001271. The next prime is 8888001301. The reversal of 8888001281 is 1821008888.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8564577025 + 323424256 = 92545^2 + 17984^2 .

It is a cyclic number.

It is not a de Polignac number, because 8888001281 - 2¹⁰ = 8888000257 is a prime.

It is a super-2 number, since 2×8888001281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8888001271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4444000640 + 4444000641.

It is an arithmetic number, because the mean of its divisors is an integer number (4444000641).

Almost surely, 2^8888001281 is an apocalyptic number.

It is an amenable number.

8888001281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8888001281 is an equidigital number, since it uses as much as digits as its factorization.

8888001281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65536, while the sum is 44.

The square root of 8888001281 is about 94276.1967890093. The cubic root of 8888001281 is about 2071.4193849053.

The spelling of 8888001281 in words is "eight billion, eight hundred eighty-eight million, one thousand, two hundred eighty-one".