85319149 has 4 divisors (see below), whose sum is σ = 85340764. Its totient is φ = 85297536.

The previous prime is 85319119. The next prime is 85319159. The reversal of 85319149 is 94191358.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29920900 + 55398249 = 5470^2 + 7443^2 .

It is a cyclic number.

It is not a de Polignac number, because 85319149 - 2⁹ = 85318637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85319119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3012 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (21335191).

Almost surely, 2^85319149 is an apocalyptic number.

It is an amenable number.

85319149 is a deficient number, since it is larger than the sum of its proper divisors (21615).

85319149 is a wasteful number, since it uses less digits than its factorization.

85319149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21614.

The product of its digits is 38880, while the sum is 40.

The square root of 85319149 is about 9236.8365255644. The cubic root of 85319149 is about 440.2325716068.

It can be divided in two parts, 853 and 19149, that added together give a palindrome (20002).

The spelling of 85319149 in words is "eighty-five million, three hundred nineteen thousand, one hundred forty-nine".