84100481 has 2 divisors, whose sum is σ = 84100482. Its totient is φ = 84100480.

The previous prime is 84100439. The next prime is 84100483. The reversal of 84100481 is 18400148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74114881 + 9985600 = 8609^2 + 3160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84100481 is a prime.

It is a super-2 number, since 2×84100481² = 14145781808862722, which contains 22 as substring.

Together with 84100483, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84100481.

It is not a weakly prime, because it can be changed into another prime (84100483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42050240 + 42050241.

It is an arithmetic number, because the mean of its divisors is an integer number (42050241).

Almost surely, 2^84100481 is an apocalyptic number.

It is an amenable number.

84100481 is a deficient number, since it is larger than the sum of its proper divisors (1).

84100481 is an equidigital number, since it uses as much as digits as its factorization.

84100481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 84100481 is about 9170.6314395466. The cubic root of 84100481 is about 438.1264707796.

The spelling of 84100481 in words is "eighty-four million, one hundred thousand, four hundred eighty-one".