858344971387 has 2 divisors, whose sum is σ = 858344971388. Its totient is φ = 858344971386.

The previous prime is 858344971349. The next prime is 858344971397. The reversal of 858344971387 is 783179443858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-858344971387 is a prime.

It is not a weakly prime, because it can be changed into another prime (858344971307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429172485693 + 429172485694.

It is an arithmetic number, because the mean of its divisors is an integer number (429172485694).

Almost surely, 2^858344971387 is an apocalyptic number.

858344971387 is a deficient number, since it is larger than the sum of its proper divisors (1).

858344971387 is an equidigital number, since it uses as much as digits as its factorization.

858344971387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 67.

The spelling of 858344971387 in words is "eight hundred fifty-eight billion, three hundred forty-four million, nine hundred seventy-one thousand, three hundred eighty-seven".