91380941 has 2 divisors, whose sum is σ = 91380942. Its totient is φ = 91380940.

The previous prime is 91380917. The next prime is 91380973. The reversal of 91380941 is 14908319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53509225 + 37871716 = 7315^2 + 6154^2 .

It is an emirp because it is prime and its reverse (14908319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91380941 - 2¹⁴ = 91364557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91370941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45690470 + 45690471.

It is an arithmetic number, because the mean of its divisors is an integer number (45690471).

Almost surely, 2^91380941 is an apocalyptic number.

It is an amenable number.

91380941 is a deficient number, since it is larger than the sum of its proper divisors (1).

91380941 is an equidigital number, since it uses as much as digits as its factorization.

91380941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 91380941 is about 9559.3378954821. The cubic root of 91380941 is about 450.4209082377.

The spelling of 91380941 in words is "ninety-one million, three hundred eighty thousand, nine hundred forty-one".