85190069 has 2 divisors, whose sum is σ = 85190070. Its totient is φ = 85190068.

The previous prime is 85190059. The next prime is 85190071. The reversal of 85190069 is 96009158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55323844 + 29866225 = 7438^2 + 5465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85190069 is a prime.

It is a super-2 number, since 2×85190069² = 14514695712449522, which contains 22 as substring.

Together with 85190071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85190059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42595034 + 42595035.

It is an arithmetic number, because the mean of its divisors is an integer number (42595035).

Almost surely, 2^85190069 is an apocalyptic number.

It is an amenable number.

85190069 is a deficient number, since it is larger than the sum of its proper divisors (1).

85190069 is an equidigital number, since it uses as much as digits as its factorization.

85190069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 85190069 is about 9229.8466401127. The cubic root of 85190069 is about 440.0104491320.

The spelling of 85190069 in words is "eighty-five million, one hundred ninety thousand, sixty-nine".