85791427 has 2 divisors, whose sum is σ = 85791428. Its totient is φ = 85791426.

The previous prime is 85791413. The next prime is 85791439. The reversal of 85791427 is 72419758.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85791427 is a prime.

It is not a weakly prime, because it can be changed into another prime (85791467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42895713 + 42895714.

It is an arithmetic number, because the mean of its divisors is an integer number (42895714).

Almost surely, 2^85791427 is an apocalyptic number.

85791427 is a deficient number, since it is larger than the sum of its proper divisors (1).

85791427 is an equidigital number, since it uses as much as digits as its factorization.

85791427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 85791427 is about 9262.3661663746. The cubic root of 85791427 is about 441.0433692948.

The spelling of 85791427 in words is "eighty-five million, seven hundred ninety-one thousand, four hundred twenty-seven".