1109487 has 4 divisors (see below), whose sum is σ = 1479320. Its totient is φ = 739656.

The previous prime is 1109477. The next prime is 1109489. The reversal of 1109487 is 7849011.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1109487 - 2⁸ = 1109231 is a prime.

It is a super-2 number, since 2×1109487² = 2461922806338, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109489) 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, 184912 + ... + 184917.

It is an arithmetic number, because the mean of its divisors is an integer number (369830).

2^1109487 is an apocalyptic number.

1109487 is a deficient number, since it is larger than the sum of its proper divisors (369833).

1109487 is an equidigital number, since it uses as much as digits as its factorization.

1109487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369832.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1109487 is about 1053.3218881235. The cubic root of 1109487 is about 103.5239273486.

It can be divided in two parts, 1109 and 487, that added together give a triangular number (1596 = T₅₆).

The spelling of 1109487 in words is "one million, one hundred nine thousand, four hundred eighty-seven".