91005494 has 8 divisors (see below), whose sum is σ = 138822120. Its totient is φ = 44731456.

The previous prime is 91005493. The next prime is 91005511. The reversal of 91005494 is 49450019.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91005494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91005493) 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 3 ways as a sum of consecutive naturals, for example, 385499 + ... + 385734.

It is an arithmetic number, because the mean of its divisors is an integer number (17352765).

Almost surely, 2^91005494 is an apocalyptic number.

91005494 is a deficient number, since it is larger than the sum of its proper divisors (47816626).

91005494 is a wasteful number, since it uses less digits than its factorization.

91005494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771294.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 91005494 is about 9539.6799736679. The cubic root of 91005494 is about 449.8031962466.

The spelling of 91005494 in words is "ninety-one million, five thousand, four hundred ninety-four".