91404067 has 2 divisors, whose sum is σ = 91404068. Its totient is φ = 91404066.

The previous prime is 91404029. The next prime is 91404077. The reversal of 91404067 is 76040419.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91404067 - 2¹⁵ = 91371299 is a prime.

It is not a weakly prime, because it can be changed into another prime (91404007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45702033 + 45702034.

It is an arithmetic number, because the mean of its divisors is an integer number (45702034).

Almost surely, 2^91404067 is an apocalyptic number.

91404067 is a deficient number, since it is larger than the sum of its proper divisors (1).

91404067 is an equidigital number, since it uses as much as digits as its factorization.

91404067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 91404067 is about 9560.5474215654. The cubic root of 91404067 is about 450.4589014093.

The spelling of 91404067 in words is "ninety-one million, four hundred four thousand, sixty-seven".