84080281 has 2 divisors, whose sum is σ = 84080282. Its totient is φ = 84080280.

The previous prime is 84080237. The next prime is 84080287. The reversal of 84080281 is 18208048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83814025 + 266256 = 9155^2 + 516^2 .

It is a cyclic number.

It is not a de Polignac number, because 84080281 - 2¹⁹ = 83555993 is a prime.

It is a super-2 number, since 2×84080281² = 14138987306077922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84080287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42040140 + 42040141.

It is an arithmetic number, because the mean of its divisors is an integer number (42040141).

Almost surely, 2^84080281 is an apocalyptic number.

It is an amenable number.

84080281 is a deficient number, since it is larger than the sum of its proper divisors (1).

84080281 is an equidigital number, since it uses as much as digits as its factorization.

84080281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 84080281 is about 9169.5300315774. The cubic root of 84080281 is about 438.0913902693.

The spelling of 84080281 in words is "eighty-four million, eighty thousand, two hundred eighty-one".