85274369 has 2 divisors, whose sum is σ = 85274370. Its totient is φ = 85274368.

The previous prime is 85274359. The next prime is 85274389. The reversal of 85274369 is 96347258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62995969 + 22278400 = 7937^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 85274369 - 2⁸ = 85274113 is a prime.

It is a super-2 number, since 2×85274369² = 14543436016696322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_4958693 and since 85274369 and 4958693 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85274359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42637184 + 42637185.

It is an arithmetic number, because the mean of its divisors is an integer number (42637185).

Almost surely, 2^85274369 is an apocalyptic number.

It is an amenable number.

85274369 is a deficient number, since it is larger than the sum of its proper divisors (1).

85274369 is an equidigital number, since it uses as much as digits as its factorization.

85274369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 85274369 is about 9234.4122173531. The cubic root of 85274369 is about 440.1555390191.

The spelling of 85274369 in words is "eighty-five million, two hundred seventy-four thousand, three hundred sixty-nine".