1106409 has 4 divisors (see below), whose sum is σ = 1475216. Its totient is φ = 737604.

The previous prime is 1106407. The next prime is 1106419. The reversal of 1106409 is 9046011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1106409 - 2¹ = 1106407 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1106401) 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, 184399 + ... + 184404.

It is an arithmetic number, because the mean of its divisors is an integer number (368804).

2^1106409 is an apocalyptic number.

It is an amenable number.

1106409 is a deficient number, since it is larger than the sum of its proper divisors (368807).

1106409 is an equidigital number, since it uses as much as digits as its factorization.

1106409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368806.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1106409 is about 1051.8597815298. The cubic root of 1106409 is about 103.4281047530.

The spelling of 1106409 in words is "one million, one hundred six thousand, four hundred nine".