91074193 has 12 divisors (see below), whose sum is σ = 107945460. Its totient is φ = 76588512.

The previous prime is 91074169. The next prime is 91074251. The reversal of 91074193 is 39147019.

It can be written as a sum of positive squares in 2 ways, for example, as 81414529 + 9659664 = 9023^2 + 3108^2 .

It is not a de Polignac number, because 91074193 - 2⁹ = 91073681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91078193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14938 + ... + 20131.

It is an arithmetic number, because the mean of its divisors is an integer number (8995455).

Almost surely, 2^91074193 is an apocalyptic number.

It is an amenable number.

91074193 is a deficient number, since it is larger than the sum of its proper divisors (16871267).

91074193 is a wasteful number, since it uses less digits than its factorization.

91074193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35136 (or 35129 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 91074193 is about 9543.2799917010. The cubic root of 91074193 is about 449.9163515301.

The spelling of 91074193 in words is "ninety-one million, seventy-four thousand, one hundred ninety-three".