85449473 has 2 divisors, whose sum is σ = 85449474. Its totient is φ = 85449472.

The previous prime is 85449467. The next prime is 85449499. The reversal of 85449473 is 37494458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78357904 + 7091569 = 8852^2 + 2663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85449473 is a prime.

It is a super-2 number, since 2×85449473² = 14603224871955458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85449433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42724736 + 42724737.

It is an arithmetic number, because the mean of its divisors is an integer number (42724737).

Almost surely, 2^85449473 is an apocalyptic number.

It is an amenable number.

85449473 is a deficient number, since it is larger than the sum of its proper divisors (1).

85449473 is an equidigital number, since it uses as much as digits as its factorization.

85449473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 85449473 is about 9243.8884134330. Note that the first 3 decimals coincide. The cubic root of 85449473 is about 440.4566076056.

The spelling of 85449473 in words is "eighty-five million, four hundred forty-nine thousand, four hundred seventy-three".