63793391 has 2 divisors, whose sum is σ = 63793392. Its totient is φ = 63793390.

The previous prime is 63793357. The next prime is 63793403. The reversal of 63793391 is 19339736.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63793391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63793321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31896695 + 31896696.

It is an arithmetic number, because the mean of its divisors is an integer number (31896696).

Almost surely, 2^63793391 is an apocalyptic number.

63793391 is a deficient number, since it is larger than the sum of its proper divisors (1).

63793391 is an equidigital number, since it uses as much as digits as its factorization.

63793391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 41.

The square root of 63793391 is about 7987.0764989450. The cubic root of 63793391 is about 399.5691005642.

The spelling of 63793391 in words is "sixty-three million, seven hundred ninety-three thousand, three hundred ninety-one".