985961 has 4 divisors (see below), whose sum is σ = 988032. Its totient is φ = 983892.

The previous prime is 985951. The next prime is 985969. The reversal of 985961 is 169589.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985961 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985961.

It is not an unprimeable number, because it can be changed into a prime (985969) 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, 80 + ... + 1406.

It is an arithmetic number, because the mean of its divisors is an integer number (247008).

2⁹⁸⁵⁹⁶¹ is an apocalyptic number.

It is an amenable number.

985961 is a deficient number, since it is larger than the sum of its proper divisors (2071).

985961 is a wasteful number, since it uses less digits than its factorization.

985961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070.

The product of its digits is 19440, while the sum is 38.

The square root of 985961 is about 992.9556888401. The cubic root of 985961 is about 99.5298261636.

The spelling of 985961 in words is "nine hundred eighty-five thousand, nine hundred sixty-one".