1109404487 has 4 divisors (see below), whose sum is σ = 1112972016. Its totient is φ = 1105836960.

The previous prime is 1109404463. The next prime is 1109404489. The reversal of 1109404487 is 7844049011.

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

It is a cyclic number.

It is not a de Polignac number, because 1109404487 - 2¹⁸ = 1109142343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1109404487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109404489) 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 3 ways as a sum of consecutive naturals, for example, 1783298 + ... + 1783919.

It is an arithmetic number, because the mean of its divisors is an integer number (278243004).

Almost surely, 2^1109404487 is an apocalyptic number.

1109404487 is a deficient number, since it is larger than the sum of its proper divisors (3567529).

1109404487 is an equidigital number, since it uses as much as digits as its factorization.

1109404487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567528.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1109404487 is about 33307.7241342005. The cubic root of 1109404487 is about 1035.2136091274.

The spelling of 1109404487 in words is "one billion, one hundred nine million, four hundred four thousand, four hundred eighty-seven".