85841491 has 2 divisors, whose sum is σ = 85841492. Its totient is φ = 85841490.

The previous prime is 85841471. The next prime is 85841521. The reversal of 85841491 is 19414858.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85841491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85841471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42920745 + 42920746.

It is an arithmetic number, because the mean of its divisors is an integer number (42920746).

Almost surely, 2^85841491 is an apocalyptic number.

85841491 is a deficient number, since it is larger than the sum of its proper divisors (1).

85841491 is an equidigital number, since it uses as much as digits as its factorization.

85841491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 40.

The square root of 85841491 is about 9265.0683213887. The cubic root of 85841491 is about 441.1291436057.

The spelling of 85841491 in words is "eighty-five million, eight hundred forty-one thousand, four hundred ninety-one".