91289382 has 8 divisors (see below), whose sum is σ = 182578776. Its totient is φ = 30429792.

The previous prime is 91289339. The next prime is 91289399. The reversal of 91289382 is 28398219.

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

91289382 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7607443 + ... + 7607454.

It is an arithmetic number, because the mean of its divisors is an integer number (22822347).

Almost surely, 2^91289382 is an apocalyptic number.

91289382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91289382 is a wasteful number, since it uses less digits than its factorization.

91289382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15214902.

The product of its digits is 62208, while the sum is 42.

The square root of 91289382 is about 9554.5477130003. The cubic root of 91289382 is about 450.2704251112.

The spelling of 91289382 in words is "ninety-one million, two hundred eighty-nine thousand, three hundred eighty-two".