1089321 has 8 divisors (see below), whose sum is σ = 1458144. Its totient is φ = 723360.

The previous prime is 1089313. The next prime is 1089359. The reversal of 1089321 is 1239801.

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

It is not a de Polignac number, because 1089321 - 2³ = 1089313 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1089291 and 1089300.

It is not an unprimeable number, because it can be changed into a prime (1089421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 1541.

It is an arithmetic number, because the mean of its divisors is an integer number (182268).

2^1089321 is an apocalyptic number.

It is an amenable number.

1089321 is a deficient number, since it is larger than the sum of its proper divisors (368823).

1089321 is a wasteful number, since it uses less digits than its factorization.

1089321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1089321 is about 1043.7054182096. The cubic root of 1089321 is about 102.8928725628.

The spelling of 1089321 in words is "one million, eighty-nine thousand, three hundred twenty-one".