85919371 has 2 divisors, whose sum is σ = 85919372. Its totient is φ = 85919370.

The previous prime is 85919369. The next prime is 85919381. The reversal of 85919371 is 17391958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85919371 - 2¹ = 85919369 is a prime.

Together with 85919369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85919381) 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, 42959685 + 42959686.

It is an arithmetic number, because the mean of its divisors is an integer number (42959686).

Almost surely, 2^85919371 is an apocalyptic number.

85919371 is a deficient number, since it is larger than the sum of its proper divisors (1).

85919371 is an equidigital number, since it uses as much as digits as its factorization.

85919371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 85919371 is about 9269.2702517512. The cubic root of 85919371 is about 441.2625086135.

The spelling of 85919371 in words is "eighty-five million, nine hundred nineteen thousand, three hundred seventy-one".