85170469 has 2 divisors, whose sum is σ = 85170470. Its totient is φ = 85170468.

The previous prime is 85170451. The next prime is 85170497. The reversal of 85170469 is 96407158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63202500 + 21967969 = 7950^2 + 4687^2 .

It is a cyclic number.

It is not a de Polignac number, because 85170469 - 2⁹ = 85169957 is a prime.

It is a super-2 number, since 2×85170469² = 14508017579359922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85170499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42585234 + 42585235.

It is an arithmetic number, because the mean of its divisors is an integer number (42585235).

Almost surely, 2^85170469 is an apocalyptic number.

It is an amenable number.

85170469 is a deficient number, since it is larger than the sum of its proper divisors (1).

85170469 is an equidigital number, since it uses as much as digits as its factorization.

85170469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 85170469 is about 9228.7848062462. The cubic root of 85170469 is about 439.9767015900.

The spelling of 85170469 in words is "eighty-five million, one hundred seventy thousand, four hundred sixty-nine".