85222469 has 2 divisors, whose sum is σ = 85222470. Its totient is φ = 85222468.

The previous prime is 85222457. The next prime is 85222483. The reversal of 85222469 is 96422258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69722500 + 15499969 = 8350^2 + 3937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85222469 is a prime.

It is a super-2 number, since 2×85222469² = 14525738444911922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85222439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42611234 + 42611235.

It is an arithmetic number, because the mean of its divisors is an integer number (42611235).

Almost surely, 2^85222469 is an apocalyptic number.

It is an amenable number.

85222469 is a deficient number, since it is larger than the sum of its proper divisors (1).

85222469 is an equidigital number, since it uses as much as digits as its factorization.

85222469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 85222469 is about 9231.6016486848. The cubic root of 85222469 is about 440.0662245362.

The spelling of 85222469 in words is "eighty-five million, two hundred twenty-two thousand, four hundred sixty-nine".