85891411 has 2 divisors, whose sum is σ = 85891412. Its totient is φ = 85891410.

The previous prime is 85891357. The next prime is 85891423. The reversal of 85891411 is 11419858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85891411 is a prime.

It is equal to p_4992544 and since 85891411 and 4992544 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85891441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42945705 + 42945706.

It is an arithmetic number, because the mean of its divisors is an integer number (42945706).

Almost surely, 2^85891411 is an apocalyptic number.

85891411 is a deficient number, since it is larger than the sum of its proper divisors (1).

85891411 is an equidigital number, since it uses as much as digits as its factorization.

85891411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 37.

The square root of 85891411 is about 9267.7619196870. The cubic root of 85891411 is about 441.2146380027.

It can be divided in two parts, 8589 and 1411, that added together give a 4-th power (10000 = 10⁴).

The spelling of 85891411 in words is "eighty-five million, eight hundred ninety-one thousand, four hundred eleven".