5393778391 has 2 divisors, whose sum is σ = 5393778392. Its totient is φ = 5393778390.

The previous prime is 5393778373. The next prime is 5393778409. The reversal of 5393778391 is 1938773935.

It is a balanced prime because it is at equal distance from previous prime (5393778373) and next prime (5393778409).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5393778391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5393778361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2696889195 + 2696889196.

It is an arithmetic number, because the mean of its divisors is an integer number (2696889196).

Almost surely, 2^5393778391 is an apocalyptic number.

5393778391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5393778391 is an equidigital number, since it uses as much as digits as its factorization.

5393778391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 55.

The square root of 5393778391 is about 73442.3473957634. The cubic root of 5393778391 is about 1753.7366026972.

The spelling of 5393778391 in words is "five billion, three hundred ninety-three million, seven hundred seventy-eight thousand, three hundred ninety-one".