9391427741 has 2 divisors, whose sum is σ = 9391427742. Its totient is φ = 9391427740.

The previous prime is 9391427737. The next prime is 9391427743. The reversal of 9391427741 is 1477241939.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5090822500 + 4300605241 = 71350^2 + 65579^2 .

It is a cyclic number.

It is not a de Polignac number, because 9391427741 - 2² = 9391427737 is a prime.

Together with 9391427743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9391427743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4695713870 + 4695713871.

It is an arithmetic number, because the mean of its divisors is an integer number (4695713871).

Almost surely, 2^9391427741 is an apocalyptic number.

It is an amenable number.

9391427741 is a deficient number, since it is larger than the sum of its proper divisors (1).

9391427741 is an equidigital number, since it uses as much as digits as its factorization.

9391427741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 9391427741 is about 96909.3790146238. The cubic root of 9391427741 is about 2109.8125617584.

The spelling of 9391427741 in words is "nine billion, three hundred ninety-one million, four hundred twenty-seven thousand, seven hundred forty-one".