1089263 has 4 divisors (see below), whose sum is σ = 1244880. Its totient is φ = 933648.

The previous prime is 1089259. The next prime is 1089299. The reversal of 1089263 is 3629801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3629801 = 7 ⋅518543.

It is a cyclic number.

It is not a de Polignac number, because 1089263 - 2² = 1089259 is a prime.

It is a d-powerful number, because it can be written as 1 + 0 + 8⁵ + 9³ + 2¹⁹ + 6² + 3¹² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089223) 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 3 ways as a sum of consecutive naturals, for example, 77798 + ... + 77811.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

2^1089263 is an apocalyptic number.

1089263 is a deficient number, since it is larger than the sum of its proper divisors (155617).

1089263 is an equidigital number, since it uses as much as digits as its factorization.

1089263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155616.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1089263 is about 1043.6776322218. The cubic root of 1089263 is about 102.8910463816.

The spelling of 1089263 in words is "one million, eighty-nine thousand, two hundred sixty-three".