85209838 has 8 divisors (see below), whose sum is σ = 146074032. Its totient is φ = 36518496.

The previous prime is 85209829. The next prime is 85209847. The reversal of 85209838 is 83890258.

It is an interprime number because it is at equal distance from previous prime (85209829) and next prime (85209847).

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

It is a junction number, because it is equal to n+sod(n) for n = 85209794 and 85209803.

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, 3043195 + ... + 3043222.

It is an arithmetic number, because the mean of its divisors is an integer number (18259254).

Almost surely, 2^85209838 is an apocalyptic number.

85209838 is a deficient number, since it is larger than the sum of its proper divisors (60864194).

85209838 is a wasteful number, since it uses less digits than its factorization.

85209838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086426.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 85209838 is about 9230.9175058604. The cubic root of 85209838 is about 440.0444824174.

The spelling of 85209838 in words is "eighty-five million, two hundred nine thousand, eight hundred thirty-eight".