84396553 has 2 divisors, whose sum is σ = 84396554. Its totient is φ = 84396552.

The previous prime is 84396523. The next prime is 84396563. The reversal of 84396553 is 35569348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83685904 + 710649 = 9148^2 + 843^2 .

It is a cyclic number.

It is not a de Polignac number, because 84396553 - 2²¹ = 82299401 is a prime.

It is not a weakly prime, because it can be changed into another prime (84396523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42198276 + 42198277.

It is an arithmetic number, because the mean of its divisors is an integer number (42198277).

Almost surely, 2^84396553 is an apocalyptic number.

It is an amenable number.

84396553 is a deficient number, since it is larger than the sum of its proper divisors (1).

84396553 is an equidigital number, since it uses as much as digits as its factorization.

84396553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

The square root of 84396553 is about 9186.7596572459. The cubic root of 84396553 is about 438.6400035402.

The spelling of 84396553 in words is "eighty-four million, three hundred ninety-six thousand, five hundred fifty-three".