91049333 has 2 divisors, whose sum is σ = 91049334. Its totient is φ = 91049332.

The previous prime is 91049327. The next prime is 91049353. The reversal of 91049333 is 33394019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88981489 + 2067844 = 9433^2 + 1438^2 .

It is an emirp because it is prime and its reverse (33394019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91049333 - 2²⁴ = 74272117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91049333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91049303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45524666 + 45524667.

It is an arithmetic number, because the mean of its divisors is an integer number (45524667).

Almost surely, 2^91049333 is an apocalyptic number.

It is an amenable number.

91049333 is a deficient number, since it is larger than the sum of its proper divisors (1).

91049333 is an equidigital number, since it uses as much as digits as its factorization.

91049333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 91049333 is about 9541.9774156094. The cubic root of 91049333 is about 449.8754107763.

The spelling of 91049333 in words is "ninety-one million, forty-nine thousand, three hundred thirty-three".