11405109 has 8 divisors (see below), whose sum is σ = 15456352. Its totient is φ = 7478640.

The previous prime is 11405101. The next prime is 11405129. The reversal of 11405109 is 90150411.

11405109 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11405109 - 2³ = 11405101 is a prime.

It is a super-2 number, since 2×11405109² = 260153022603762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405101) 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, 30979 + ... + 31344.

It is an arithmetic number, because the mean of its divisors is an integer number (1932044).

Almost surely, 2^11405109 is an apocalyptic number.

It is an amenable number.

11405109 is a deficient number, since it is larger than the sum of its proper divisors (4051243).

11405109 is an equidigital number, since it uses as much as digits as its factorization.

11405109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62387.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 11405109 is about 3377.1450960834. The cubic root of 11405109 is about 225.0953275074.

The spelling of 11405109 in words is "eleven million, four hundred five thousand, one hundred nine".