11439109 has 8 divisors (see below), whose sum is σ = 12508128. Its totient is φ = 10374960.

The previous prime is 11439107. The next prime is 11439139. The reversal of 11439109 is 90193411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11439109 - 2¹ = 11439107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11439101) 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, 5194 + ... + 7060.

It is an arithmetic number, because the mean of its divisors is an integer number (1563516).

Almost surely, 2^11439109 is an apocalyptic number.

It is an amenable number.

11439109 is a deficient number, since it is larger than the sum of its proper divisors (1069019).

11439109 is a wasteful number, since it uses less digits than its factorization.

11439109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 11439109 is about 3382.1751876566. The cubic root of 11439109 is about 225.3187843409.

The spelling of 11439109 in words is "eleven million, four hundred thirty-nine thousand, one hundred nine".