1089329 has 6 divisors (see below), whose sum is σ = 1122786. Its totient is φ = 1056240.

The previous prime is 1089313. The next prime is 1089359. The reversal of 1089329 is 9239801.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 425104 = 815^2 + 652^2 .

It is not a de Polignac number, because 1089329 - 2⁴ = 1089313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1089295 and 1089304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6602 + ... + 6764.

It is an arithmetic number, because the mean of its divisors is an integer number (187131).

2^1089329 is an apocalyptic number.

It is an amenable number.

1089329 is a deficient number, since it is larger than the sum of its proper divisors (33457).

1089329 is an frugal number, since it uses more digits than its factorization.

1089329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1089329 is about 1043.7092507016. The cubic root of 1089329 is about 102.8931244448.

It can be divided in two parts, 1089 and 329, that multiplied together give a triangular number (358281 = T₈₄₆).

The spelling of 1089329 in words is "one million, eighty-nine thousand, three hundred twenty-nine".