8942772481 has 2 divisors, whose sum is σ = 8942772482. Its totient is φ = 8942772480.

The previous prime is 8942772473. The next prime is 8942772499. The reversal of 8942772481 is 1842772498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8102700225 + 840072256 = 90015^2 + 28984^2 .

It is a cyclic number.

It is not a de Polignac number, because 8942772481 - 2³ = 8942772473 is a prime.

It is a super-2 number, since 2×8942772481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8942772451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4471386240 + 4471386241.

It is an arithmetic number, because the mean of its divisors is an integer number (4471386241).

Almost surely, 2^8942772481 is an apocalyptic number.

It is an amenable number.

8942772481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8942772481 is an equidigital number, since it uses as much as digits as its factorization.

8942772481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 52.

The square root of 8942772481 is about 94566.2333023791. The cubic root of 8942772481 is about 2075.6656290816.

The spelling of 8942772481 in words is "eight billion, nine hundred forty-two million, seven hundred seventy-two thousand, four hundred eighty-one".