989535 has 16 divisors (see below), whose sum is σ = 1622880. Its totient is φ = 514560.

The previous prime is 989533. The next prime is 989557. The reversal of 989535 is 535989.

It is not a de Polignac number, because 989535 - 2¹ = 989533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 989493 and 989502.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989535.

It is not an unprimeable number, because it can be changed into a prime (989533) 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 in 15 ways as a sum of consecutive naturals, for example, 190 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (101430).

2⁹⁸⁹⁵³⁵ is an apocalyptic number.

989535 is a deficient number, since it is larger than the sum of its proper divisors (633345).

989535 is a wasteful number, since it uses less digits than its factorization.

989535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658.

The product of its digits is 48600, while the sum is 39.

The square root of 989535 is about 994.7537383695. The cubic root of 989535 is about 99.6499426954.

It can be divided in two parts, 9 and 89535, that multiplied together give a triangular number (805815 = T₁₂₆₉).

The spelling of 989535 in words is "nine hundred eighty-nine thousand, five hundred thirty-five".