84406123 has 2 divisors, whose sum is σ = 84406124. Its totient is φ = 84406122.

The previous prime is 84406099. The next prime is 84406129. The reversal of 84406123 is 32160448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84406123 - 2⁹ = 84405611 is a prime.

It is a super-2 number, since 2×84406123² = 14248787199782258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84406091 and 84406100.

It is not a weakly prime, because it can be changed into another prime (84406129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42203061 + 42203062.

It is an arithmetic number, because the mean of its divisors is an integer number (42203062).

Almost surely, 2^84406123 is an apocalyptic number.

84406123 is a deficient number, since it is larger than the sum of its proper divisors (1).

84406123 is an equidigital number, since it uses as much as digits as its factorization.

84406123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 84406123 is about 9187.2805007793. The cubic root of 84406123 is about 438.6565825197.

The spelling of 84406123 in words is "eighty-four million, four hundred six thousand, one hundred twenty-three".