84448424381 has 2 divisors, whose sum is σ = 84448424382. Its totient is φ = 84448424380.

The previous prime is 84448424371. The next prime is 84448424399. The reversal of 84448424381 is 18342484448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75094633156 + 9353791225 = 274034^2 + 96715^2 .

It is a cyclic number.

It is not a de Polignac number, because 84448424381 - 2¹⁸ = 84448162237 is a prime.

It is a super-2 number, since 2×84448424381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84448424371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42224212190 + 42224212191.

It is an arithmetic number, because the mean of its divisors is an integer number (42224212191).

Almost surely, 2^84448424381 is an apocalyptic number.

It is an amenable number.

84448424381 is a deficient number, since it is larger than the sum of its proper divisors (1).

84448424381 is an equidigital number, since it uses as much as digits as its factorization.

84448424381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3145728, while the sum is 50.

The spelling of 84448424381 in words is "eighty-four billion, four hundred forty-eight million, four hundred twenty-four thousand, three hundred eighty-one".