1089912 has 16 divisors (see below), whose sum is σ = 2724840. Its totient is φ = 363296.

The previous prime is 1089877. The next prime is 1089917. The reversal of 1089912 is 2199801.

It is a self number, because there is not a number n which added to its sum of digits gives 1089912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089917) 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, 22683 + ... + 22730.

2^1089912 is an apocalyptic number.

1089912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1089912 is an abundant number, since it is smaller than the sum of its proper divisors (1634928).

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

1089912 is a wasteful number, since it uses less digits than its factorization.

1089912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45422 (or 45418 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1089912 is about 1043.9885056839. The cubic root of 1089912 is about 102.9114770249.

The spelling of 1089912 in words is "one million, eighty-nine thousand, nine hundred twelve".