91012917 has 8 divisors (see below), whose sum is σ = 128488896. Its totient is φ = 57106112.

The previous prime is 91012871. The next prime is 91012949. The reversal of 91012917 is 71921019.

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

It is a cyclic number.

It is not a de Polignac number, because 91012917 - 2¹¹ = 91010869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91012967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892233 + ... + 892334.

It is an arithmetic number, because the mean of its divisors is an integer number (16061112).

Almost surely, 2^91012917 is an apocalyptic number.

It is an amenable number.

91012917 is a deficient number, since it is larger than the sum of its proper divisors (37475979).

91012917 is a wasteful number, since it uses less digits than its factorization.

91012917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784587.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 91012917 is about 9540.0690249075. The cubic root of 91012917 is about 449.8154255388.

The spelling of 91012917 in words is "ninety-one million, twelve thousand, nine hundred seventeen".