814383391 has 2 divisors, whose sum is σ = 814383392. Its totient is φ = 814383390.

The previous prime is 814383359. The next prime is 814383403. The reversal of 814383391 is 193383418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 814383391 - 2⁵ = 814383359 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 (814383341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407191695 + 407191696.

It is an arithmetic number, because the mean of its divisors is an integer number (407191696).

Almost surely, 2^814383391 is an apocalyptic number.

814383391 is a deficient number, since it is larger than the sum of its proper divisors (1).

814383391 is an equidigital number, since it uses as much as digits as its factorization.

814383391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 814383391 is about 28537.4033682113. The cubic root of 814383391 is about 933.8482356846.

The spelling of 814383391 in words is "eight hundred fourteen million, three hundred eighty-three thousand, three hundred ninety-one".