84898081 has 2 divisors, whose sum is σ = 84898082. Its totient is φ = 84898080.

The previous prime is 84898069. The next prime is 84898123. The reversal of 84898081 is 18089848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84272400 + 625681 = 9180^2 + 791^2 .

It is a cyclic number.

It is not a de Polignac number, because 84898081 - 2⁹ = 84897569 is a prime.

It is a super-2 number, since 2×84898081² = 14415368314965122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84898001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42449040 + 42449041.

It is an arithmetic number, because the mean of its divisors is an integer number (42449041).

Almost surely, 2^84898081 is an apocalyptic number.

It is an amenable number.

84898081 is a deficient number, since it is larger than the sum of its proper divisors (1).

84898081 is an equidigital number, since it uses as much as digits as its factorization.

84898081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 84898081 is about 9214.0154655829. The cubic root of 84898081 is about 439.5071634085.

The spelling of 84898081 in words is "eighty-four million, eight hundred ninety-eight thousand, eighty-one".