85689438 has 8 divisors (see below), whose sum is σ = 171378888. Its totient is φ = 28563144.

The previous prime is 85689419. The next prime is 85689451. The reversal of 85689438 is 83498658.

It is a sphenic number, since it is the product of 3 distinct primes.

85689438 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 7140781 + ... + 7140792.

It is an arithmetic number, because the mean of its divisors is an integer number (21422361).

Almost surely, 2^85689438 is an apocalyptic number.

85689438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85689438 is a wasteful number, since it uses less digits than its factorization.

85689438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14281578.

The product of its digits is 1658880, while the sum is 51.

The square root of 85689438 is about 9256.8589705148. The cubic root of 85689438 is about 440.8685289475.

The spelling of 85689438 in words is "eighty-five million, six hundred eighty-nine thousand, four hundred thirty-eight".