9421727957 has 2 divisors, whose sum is σ = 9421727958. Its totient is φ = 9421727956.

The previous prime is 9421727933. The next prime is 9421728013. The reversal of 9421727957 is 7597271249.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5961229681 + 3460498276 = 77209^2 + 58826^2 .

It is an emirp because it is prime and its reverse (7597271249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9421727957 - 2¹⁶ = 9421662421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9421727899 and 9421727908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9421727927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4710863978 + 4710863979.

It is an arithmetic number, because the mean of its divisors is an integer number (4710863979).

Almost surely, 2^9421727957 is an apocalyptic number.

It is an amenable number.

9421727957 is a deficient number, since it is larger than the sum of its proper divisors (1).

9421727957 is an equidigital number, since it uses as much as digits as its factorization.

9421727957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2222640, while the sum is 53.

The square root of 9421727957 is about 97065.5858530715. The cubic root of 9421727957 is about 2112.0791375311.

The spelling of 9421727957 in words is "nine billion, four hundred twenty-one million, seven hundred twenty-seven thousand, nine hundred fifty-seven".