87969399319 has 2 divisors, whose sum is σ = 87969399320. Its totient is φ = 87969399318.

The previous prime is 87969399289. The next prime is 87969399341. The reversal of 87969399319 is 91399396978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87969399319 - 2²¹ = 87967302167 is a prime.

It is a super-2 number, since 2×87969399319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87969399389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43984699659 + 43984699660.

It is an arithmetic number, because the mean of its divisors is an integer number (43984699660).

Almost surely, 2^87969399319 is an apocalyptic number.

87969399319 is a deficient number, since it is larger than the sum of its proper divisors (1).

87969399319 is an equidigital number, since it uses as much as digits as its factorization.

87969399319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 178564176, while the sum is 73.

The spelling of 87969399319 in words is "eighty-seven billion, nine hundred sixty-nine million, three hundred ninety-nine thousand, three hundred nineteen".