837985 has 4 divisors (see below), whose sum is σ = 1005588. Its totient is φ = 670384.

The previous prime is 837979. The next prime is 838003. The reversal of 837985 is 589738.

837985 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589738 = 2 ⋅294869.

It can be written as a sum of positive squares in 2 ways, for example, as 234256 + 603729 = 484^2 + 777^2 .

It is a cyclic number.

It is not a de Polignac number, because 837985 - 2¹¹ = 835937 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83794 + ... + 83803.

It is an arithmetic number, because the mean of its divisors is an integer number (251397).

2⁸³⁷⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

837985 is a deficient number, since it is larger than the sum of its proper divisors (167603).

837985 is a wasteful number, since it uses less digits than its factorization.

837985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167602.

The product of its digits is 60480, while the sum is 40.

The square root of 837985 is about 915.4152063408. The cubic root of 837985 is about 94.2783735375.

It can be divided in two parts, 8379 and 85, that added together give a square (8464 = 92²).

The spelling of 837985 in words is "eight hundred thirty-seven thousand, nine hundred eighty-five".