85189337 has 2 divisors, whose sum is σ = 85189338. Its totient is φ = 85189336.

The previous prime is 85189297. The next prime is 85189339. The reversal of 85189337 is 73398158.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78783376 + 6405961 = 8876^2 + 2531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85189337 is a prime.

Together with 85189339, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85189339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42594668 + 42594669.

It is an arithmetic number, because the mean of its divisors is an integer number (42594669).

Almost surely, 2^85189337 is an apocalyptic number.

It is an amenable number.

85189337 is a deficient number, since it is larger than the sum of its proper divisors (1).

85189337 is an equidigital number, since it uses as much as digits as its factorization.

85189337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 85189337 is about 9229.8069860642. The cubic root of 85189337 is about 440.0091888577.

The spelling of 85189337 in words is "eighty-five million, one hundred eighty-nine thousand, three hundred thirty-seven".