91927933 has 2 divisors, whose sum is σ = 91927934. Its totient is φ = 91927932.

The previous prime is 91927921. The next prime is 91927939. The reversal of 91927933 is 33972919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88698724 + 3229209 = 9418^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 91927933 - 2²¹ = 89830781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91927933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91927939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45963966 + 45963967.

It is an arithmetic number, because the mean of its divisors is an integer number (45963967).

Almost surely, 2^91927933 is an apocalyptic number.

It is an amenable number.

91927933 is a deficient number, since it is larger than the sum of its proper divisors (1).

91927933 is an equidigital number, since it uses as much as digits as its factorization.

91927933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 43.

The square root of 91927933 is about 9587.9055585670. The cubic root of 91927933 is about 451.3178373215.

The spelling of 91927933 in words is "ninety-one million, nine hundred twenty-seven thousand, nine hundred thirty-three".