85344437 has 4 divisors (see below), whose sum is σ = 90364716. Its totient is φ = 80324160.

The previous prime is 85344431. The next prime is 85344439. The reversal of 85344437 is 73444358.

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 71757841 + 13586596 = 8471^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 85344437 - 2¹⁴ = 85328053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85344437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85344431) 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 in 3 ways as a sum of consecutive naturals, for example, 2510114 + ... + 2510147.

It is an arithmetic number, because the mean of its divisors is an integer number (22591179).

Almost surely, 2^85344437 is an apocalyptic number.

It is an amenable number.

85344437 is a deficient number, since it is larger than the sum of its proper divisors (5020279).

85344437 is a wasteful number, since it uses less digits than its factorization.

85344437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020278.

The product of its digits is 161280, while the sum is 38.

The square root of 85344437 is about 9238.2052910725. The cubic root of 85344437 is about 440.2760612638.

The spelling of 85344437 in words is "eighty-five million, three hundred forty-four thousand, four hundred thirty-seven".