985951 has 2 divisors, whose sum is σ = 985952. Its totient is φ = 985950.

The previous prime is 985937. The next prime is 985969. The reversal of 985951 is 159589.

It is a weak prime.

It is an emirp because it is prime and its reverse (159589) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985951 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 985951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985921) by changing a digit.

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 as a sum of consecutive naturals, namely, 492975 + 492976.

It is an arithmetic number, because the mean of its divisors is an integer number (492976).

2⁹⁸⁵⁹⁵¹ is an apocalyptic number.

985951 is a deficient number, since it is larger than the sum of its proper divisors (1).

985951 is an equidigital number, since it uses as much as digits as its factorization.

985951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The square root of 985951 is about 992.9506533559. The cubic root of 985951 is about 99.5294896724.

It can be divided in two parts, 98595 and 1, that added together give a square (98596 = 314²).

The spelling of 985951 in words is "nine hundred eighty-five thousand, nine hundred fifty-one".