875957891 has 2 divisors, whose sum is σ = 875957892. Its totient is φ = 875957890.

The previous prime is 875957867. The next prime is 875957959. The reversal of 875957891 is 198759578.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-875957891 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 875957891.

It is not a weakly prime, because it can be changed into another prime (875953891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437978945 + 437978946.

It is an arithmetic number, because the mean of its divisors is an integer number (437978946).

Almost surely, 2^875957891 is an apocalyptic number.

875957891 is a deficient number, since it is larger than the sum of its proper divisors (1).

875957891 is an equidigital number, since it uses as much as digits as its factorization.

875957891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 59.

The square root of 875957891 is about 29596.5857997168. The cubic root of 875957891 is about 956.8144887795.

The spelling of 875957891 in words is "eight hundred seventy-five million, nine hundred fifty-seven thousand, eight hundred ninety-one".