84428833 has 2 divisors, whose sum is σ = 84428834. Its totient is φ = 84428832.

The previous prime is 84428821. The next prime is 84428843. The reversal of 84428833 is 33882448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46335249 + 38093584 = 6807^2 + 6172^2 .

It is a cyclic number.

It is not a de Polignac number, because 84428833 - 2¹³ = 84420641 is a prime.

It is not a weakly prime, because it can be changed into another prime (84428803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42214416 + 42214417.

It is an arithmetic number, because the mean of its divisors is an integer number (42214417).

Almost surely, 2^84428833 is an apocalyptic number.

It is an amenable number.

84428833 is a deficient number, since it is larger than the sum of its proper divisors (1).

84428833 is an equidigital number, since it uses as much as digits as its factorization.

84428833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 40.

The square root of 84428833 is about 9188.5163655511. The cubic root of 84428833 is about 438.6959200991.

The spelling of 84428833 in words is "eighty-four million, four hundred twenty-eight thousand, eight hundred thirty-three".