7716087389 has 2 divisors, whose sum is σ = 7716087390. Its totient is φ = 7716087388.

The previous prime is 7716087343. The next prime is 7716087419. The reversal of 7716087389 is 9837806177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7616925625 + 99161764 = 87275^2 + 9958^2 .

It is a cyclic number.

It is not a de Polignac number, because 7716087389 - 2²⁰ = 7715038813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7716087989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3858043694 + 3858043695.

It is an arithmetic number, because the mean of its divisors is an integer number (3858043695).

Almost surely, 2^7716087389 is an apocalyptic number.

It is an amenable number.

7716087389 is a deficient number, since it is larger than the sum of its proper divisors (1).

7716087389 is an equidigital number, since it uses as much as digits as its factorization.

7716087389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The square root of 7716087389 is about 87841.2624510827. The cubic root of 7716087389 is about 1976.0550802456.

The spelling of 7716087389 in words is "seven billion, seven hundred sixteen million, eighty-seven thousand, three hundred eighty-nine".