8890276981 has 2 divisors, whose sum is σ = 8890276982. Its totient is φ = 8890276980.

The previous prime is 8890276979. The next prime is 8890277003. The reversal of 8890276981 is 1896720988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6226788100 + 2663488881 = 78910^2 + 51609^2 .

It is a cyclic number.

It is not a de Polignac number, because 8890276981 - 2¹ = 8890276979 is a prime.

It is a super-2 number, since 2×8890276981² (a number of 21 digits) contains 22 as substring.

Together with 8890276979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8890276931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4445138490 + 4445138491.

It is an arithmetic number, because the mean of its divisors is an integer number (4445138491).

Almost surely, 2^8890276981 is an apocalyptic number.

It is an amenable number.

8890276981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8890276981 is an equidigital number, since it uses as much as digits as its factorization.

8890276981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 58.

The square root of 8890276981 is about 94288.2653409214. The cubic root of 8890276981 is about 2071.5961598135.

The spelling of 8890276981 in words is "eight billion, eight hundred ninety million, two hundred seventy-six thousand, nine hundred eighty-one".