985901 has 8 divisors (see below), whose sum is σ = 1136640. Its totient is φ = 837648.

The previous prime is 985877. The next prime is 985903. The reversal of 985901 is 109589.

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

It is not a de Polignac number, because 985901 - 2¹⁰ = 984877 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985903) 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 7 ways as a sum of consecutive naturals, for example, 335 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (142080).

2⁹⁸⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

985901 is a deficient number, since it is larger than the sum of its proper divisors (150739).

985901 is a wasteful number, since it uses less digits than its factorization.

985901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 985901 is about 992.9254755519. The cubic root of 985901 is about 99.5278071822.

The spelling of 985901 in words is "nine hundred eighty-five thousand, nine hundred one".