91966141 has 4 divisors (see below), whose sum is σ = 97375932. Its totient is φ = 86556352.

The previous prime is 91966139. The next prime is 91966151. The reversal of 91966141 is 14166919.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25462116 + 66504025 = 5046^2 + 8155^2 .

It is a cyclic number.

It is not a de Polignac number, because 91966141 - 2¹ = 91966139 is a prime.

It is a super-3 number, since 3×91966141³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91966141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91966111) 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 3 ways as a sum of consecutive naturals, for example, 2704870 + ... + 2704903.

It is an arithmetic number, because the mean of its divisors is an integer number (24343983).

Almost surely, 2^91966141 is an apocalyptic number.

It is an amenable number.

91966141 is a deficient number, since it is larger than the sum of its proper divisors (5409791).

91966141 is a wasteful number, since it uses less digits than its factorization.

91966141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409790.

The product of its digits is 11664, while the sum is 37.

The square root of 91966141 is about 9589.8978618127. The cubic root of 91966141 is about 451.3803557272.

The spelling of 91966141 in words is "ninety-one million, nine hundred sixty-six thousand, one hundred forty-one".