91984741 has 2 divisors, whose sum is σ = 91984742. Its totient is φ = 91984740.

The previous prime is 91984709. The next prime is 91984747. The reversal of 91984741 is 14748919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91968100 + 16641 = 9590^2 + 129^2 .

It is an emirp because it is prime and its reverse (14748919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91984741 - 2⁵ = 91984709 is a prime.

It is a super-2 number, since 2×91984741² = 16922385153674162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91984747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45992370 + 45992371.

It is an arithmetic number, because the mean of its divisors is an integer number (45992371).

Almost surely, 2^91984741 is an apocalyptic number.

It is an amenable number.

91984741 is a deficient number, since it is larger than the sum of its proper divisors (1).

91984741 is an equidigital number, since it uses as much as digits as its factorization.

91984741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 91984741 is about 9590.8675832794. The cubic root of 91984741 is about 451.4107839862.

The spelling of 91984741 in words is "ninety-one million, nine hundred eighty-four thousand, seven hundred forty-one".