1089243 has 12 divisors (see below), whose sum is σ = 1616368. Its totient is φ = 706320.

The previous prime is 1089239. The next prime is 1089259. The reversal of 1089243 is 3429801.

It is not a de Polignac number, because 1089243 - 2² = 1089239 is a prime.

It is a d-powerful number, because it can be written as 1 + 0 + 8⁵ + 9³ + 2¹⁹ + 4² + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1303 + ... + 1968.

2^1089243 is an apocalyptic number.

1089243 is a deficient number, since it is larger than the sum of its proper divisors (527125).

1089243 is a wasteful number, since it uses less digits than its factorization.

1089243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3311 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1089243 is about 1043.6680506751. The cubic root of 1089243 is about 102.8904166489.

It can be divided in two parts, 10 and 89243, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 1089243 in words is "one million, eighty-nine thousand, two hundred forty-three".