1089012 has 24 divisors (see below), whose sum is σ = 2562112. Its totient is φ = 360000.

The previous prime is 1088993. The next prime is 1089017. The reversal of 1089012 is 2109801.

It is a super-2 number, since 2×1089012² = 2371894272288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1089012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1512 + ... + 2112.

2^1089012 is an apocalyptic number.

1089012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1089012 is an abundant number, since it is smaller than the sum of its proper divisors (1473100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089012 is a wasteful number, since it uses less digits than its factorization.

1089012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 1089012 is about 1043.5573774355. The cubic root of 1089012 is about 102.8831426778.

The spelling of 1089012 in words is "one million, eighty-nine thousand, twelve".