84400067 has 2 divisors, whose sum is σ = 84400068. Its totient is φ = 84400066.

The previous prime is 84400061. The next prime is 84400093. The reversal of 84400067 is 76000448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84400067 - 2⁴ = 84400051 is a prime.

It is not a weakly prime, because it can be changed into another prime (84400061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42200033 + 42200034.

It is an arithmetic number, because the mean of its divisors is an integer number (42200034).

Almost surely, 2^84400067 is an apocalyptic number.

84400067 is a deficient number, since it is larger than the sum of its proper divisors (1).

84400067 is an equidigital number, since it uses as much as digits as its factorization.

84400067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 84400067 is about 9186.9509087618. The cubic root of 84400067 is about 438.6460913069.

The spelling of 84400067 in words is "eighty-four million, four hundred thousand, sixty-seven".