91226805 has 8 divisors (see below), whose sum is σ = 145962912. Its totient is φ = 48654288.

The previous prime is 91226761. The next prime is 91226819. The reversal of 91226805 is 50862219.

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

It is not a de Polignac number, because 91226805 - 2⁶ = 91226741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3040879 + ... + 3040908.

It is an arithmetic number, because the mean of its divisors is an integer number (18245364).

Almost surely, 2^91226805 is an apocalyptic number.

It is an amenable number.

91226805 is a deficient number, since it is larger than the sum of its proper divisors (54736107).

91226805 is a wasteful number, since it uses less digits than its factorization.

91226805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081795.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 91226805 is about 9551.2724283207. The cubic root of 91226805 is about 450.1675178786.

The spelling of 91226805 in words is "ninety-one million, two hundred twenty-six thousand, eight hundred five".