91343817 has 6 divisors (see below), whose sum is σ = 131941082. Its totient is φ = 60895872.

The previous prime is 91343807. The next prime is 91343821. The reversal of 91343817 is 71834319.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88284816 + 3059001 = 9396^2 + 1749^2 .

It is not a de Polignac number, because 91343817 - 2⁴ = 91343801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91343807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5074648 + ... + 5074665.

Almost surely, 2^91343817 is an apocalyptic number.

It is an amenable number.

91343817 is a deficient number, since it is larger than the sum of its proper divisors (40597265).

91343817 is a wasteful number, since it uses less digits than its factorization.

91343817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10149319 (or 10149316 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 91343817 is about 9557.3959319472. The cubic root of 91343817 is about 450.3599046684.

The spelling of 91343817 in words is "ninety-one million, three hundred forty-three thousand, eight hundred seventeen".