9390020477 has 2 divisors, whose sum is σ = 9390020478. Its totient is φ = 9390020476.

The previous prime is 9390020473. The next prime is 9390020509. The reversal of 9390020477 is 7740200939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8460136441 + 929884036 = 91979^2 + 30494^2 .

It is a cyclic number.

It is not a de Polignac number, because 9390020477 - 2² = 9390020473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9390020473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4695010238 + 4695010239.

It is an arithmetic number, because the mean of its divisors is an integer number (4695010239).

Almost surely, 2^9390020477 is an apocalyptic number.

It is an amenable number.

9390020477 is a deficient number, since it is larger than the sum of its proper divisors (1).

9390020477 is an equidigital number, since it uses as much as digits as its factorization.

9390020477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 9390020477 is about 96902.1180212280. The cubic root of 9390020477 is about 2109.7071744606.

The spelling of 9390020477 in words is "nine billion, three hundred ninety million, twenty thousand, four hundred seventy-seven".