11019909 has 8 divisors (see below), whose sum is σ = 14734720. Its totient is φ = 7325856.

The previous prime is 11019889. The next prime is 11019929. The reversal of 11019909 is 90991011.

It is an interprime number because it is at equal distance from previous prime (11019889) and next prime (11019929).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11019909 - 2¹¹ = 11017861 is a prime.

It is a Duffinian number.

11019909 is a modest number, since divided by 9909 gives 1101 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11019929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3904 + ... + 6105.

It is an arithmetic number, because the mean of its divisors is an integer number (1841840).

Almost surely, 2^11019909 is an apocalyptic number.

It is an amenable number.

11019909 is a deficient number, since it is larger than the sum of its proper divisors (3714811).

11019909 is a wasteful number, since it uses less digits than its factorization.

11019909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10379.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 11019909 is about 3319.6248281997. The cubic root of 11019909 is about 222.5321015838.

It can be divided in two parts, 1101 and 9909, that multiplied together give a square (10909809 = 3303²).

The spelling of 11019909 in words is "eleven million, nineteen thousand, nine hundred nine".