1089290 has 8 divisors (see below), whose sum is σ = 1960740. Its totient is φ = 435712.

The previous prime is 1089259. The next prime is 1089299. The reversal of 1089290 is 929801.

It can be written as a sum of positive squares in 2 ways, for example, as 1067089 + 22201 = 1033^2 + 149^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1089299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54455 + ... + 54474.

2^1089290 is an apocalyptic number.

1089290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089290 is a deficient number, since it is larger than the sum of its proper divisors (871450).

1089290 is a wasteful number, since it uses less digits than its factorization.

1089290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108936.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1089290 is about 1043.6905671702. The cubic root of 1089290 is about 102.8918965085.

The spelling of 1089290 in words is "one million, eighty-nine thousand, two hundred ninety".