2291249393 has 2 divisors, whose sum is σ = 2291249394. Its totient is φ = 2291249392.

The previous prime is 2291249357. The next prime is 2291249407. The reversal of 2291249393 is 3939421922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1487413489 + 803835904 = 38567^2 + 28352^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291249393 - 2¹⁰ = 2291248369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2291249353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145624696 + 1145624697.

It is an arithmetic number, because the mean of its divisors is an integer number (1145624697).

Almost surely, 2^2291249393 is an apocalyptic number.

It is an amenable number.

2291249393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291249393 is an equidigital number, since it uses as much as digits as its factorization.

2291249393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 2291249393 is about 47866.9969080994. The cubic root of 2291249393 is about 1318.3299573480.

The spelling of 2291249393 in words is "two billion, two hundred ninety-one million, two hundred forty-nine thousand, three hundred ninety-three".