1989235 has 8 divisors (see below), whose sum is σ = 2406096. Its totient is φ = 1578720.

The previous prime is 1989233. The next prime is 1989241. The reversal of 1989235 is 5329891.

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

It is not a de Polignac number, because 1989235 - 2¹ = 1989233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1989194 and 1989203.

It is not an unprimeable number, because it can be changed into a prime (1989233) 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 7 ways as a sum of consecutive naturals, for example, 864 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (300762).

2^1989235 is an apocalyptic number.

1989235 is a deficient number, since it is larger than the sum of its proper divisors (416861).

1989235 is a wasteful number, since it uses less digits than its factorization.

1989235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173.

The product of its digits is 19440, while the sum is 37.

The square root of 1989235 is about 1410.4024248419. The cubic root of 1989235 is about 125.7656473644.

The spelling of 1989235 in words is "one million, nine hundred eighty-nine thousand, two hundred thirty-five".