7985444471 has 2 divisors, whose sum is σ = 7985444472. Its totient is φ = 7985444470.

The previous prime is 7985444443. The next prime is 7985444477. The reversal of 7985444471 is 1744445897.

It is a strong prime.

It is an emirp because it is prime and its reverse (1744445897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7985444471 - 2⁶ = 7985444407 is a prime.

It is a super-3 number, since 3×7985444471³ (a number of 31 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7985444477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992722235 + 3992722236.

It is an arithmetic number, because the mean of its divisors is an integer number (3992722236).

Almost surely, 2^7985444471 is an apocalyptic number.

7985444471 is a deficient number, since it is larger than the sum of its proper divisors (1).

7985444471 is an equidigital number, since it uses as much as digits as its factorization.

7985444471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 53.

The square root of 7985444471 is about 89361.3141745353. The cubic root of 7985444471 is about 1998.7863028686.

The spelling of 7985444471 in words is "seven billion, nine hundred eighty-five million, four hundred forty-four thousand, four hundred seventy-one".