11540109 has 16 divisors (see below), whose sum is σ = 17727488. Its totient is φ = 6540912.

The previous prime is 11540107. The next prime is 11540129. The reversal of 11540109 is 90104511.

It is not a de Polignac number, because 11540109 - 2¹ = 11540107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504 + ... + 4830.

It is an arithmetic number, because the mean of its divisors is an integer number (1107968).

Almost surely, 2^11540109 is an apocalyptic number.

It is an amenable number.

11540109 is a deficient number, since it is larger than the sum of its proper divisors (6187379).

11540109 is a wasteful number, since it uses less digits than its factorization.

11540109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464.

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

The square root of 11540109 is about 3397.0735935508. The cubic root of 11540109 is about 225.9799823030.

The spelling of 11540109 in words is "eleven million, five hundred forty thousand, one hundred nine".