84908714881 has 9 divisors (see below), whose sum is σ = 85374854019. Its totient is φ = 84445111800.

The previous prime is 84908714867. The next prime is 84908714923. The reversal of 84908714881 is 18841780948.

The square root of 84908714881 is 291391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38589066481 + 46319648400 = 196441^2 + 215220^2 .

It is a de Polignac number, because none of the positive numbers 2^k-84908714881 is a prime.

It is a super-2 number, since 2×84908714881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84908714801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 61482811 + ... + 61484191.

It is an arithmetic number, because the mean of its divisors is an integer number (9486094891).

Almost surely, 2^84908714881 is an apocalyptic number.

84908714881 is the 291391-st square number.

84908714881 is the 145696-th centered octagonal number.

It is an amenable number.

84908714881 is a deficient number, since it is larger than the sum of its proper divisors (466139138).

84908714881 is an frugal number, since it uses more digits than its factorization.

84908714881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184 (or 1592 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 58.

The spelling of 84908714881 in words is "eighty-four billion, nine hundred eight million, seven hundred fourteen thousand, eight hundred eighty-one".