1109412 has 18 divisors (see below), whose sum is σ = 2804438. Its totient is φ = 369792.

The previous prime is 1109411. The next prime is 1109431. The reversal of 1109412 is 2149011.

It can be written as a sum of positive squares in only one way, i.e., 665856 + 443556 = 816^2 + 666^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1109411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15373 + ... + 15444.

2^1109412 is an apocalyptic number.

1109412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1109412 is an abundant number, since it is smaller than the sum of its proper divisors (1695026).

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

1109412 is a wasteful number, since it uses less digits than its factorization.

1109412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30827 (or 30822 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1109412 is about 1053.2862858691. The cubic root of 1109412 is about 103.5215945979.

It can be divided in two parts, 1109 and 412, that added together give a square (1521 = 39²).

The spelling of 1109412 in words is "one million, one hundred nine thousand, four hundred twelve".