91384005 has 16 divisors (see below), whose sum is σ = 146545344. Its totient is φ = 48627840.

The previous prime is 91384003. The next prime is 91384009. The reversal of 91384005 is 50048319.

It is not a de Polignac number, because 91384005 - 2¹ = 91384003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91384003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190 + ... + 13520.

It is an arithmetic number, because the mean of its divisors is an integer number (9159084).

Almost surely, 2^91384005 is an apocalyptic number.

It is an amenable number.

91384005 is a deficient number, since it is larger than the sum of its proper divisors (55161339).

91384005 is a wasteful number, since it uses less digits than its factorization.

91384005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13796.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 91384005 is about 9559.4981562841. The cubic root of 91384005 is about 450.4259423809.

The spelling of 91384005 in words is "ninety-one million, three hundred eighty-four thousand, five".