11909516 has 24 divisors (see below), whose sum is σ = 21591360. Its totient is φ = 5744000.

The previous prime is 11909509. The next prime is 11909519. The reversal of 11909516 is 61590911.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11909519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16205 + ... + 16923.

It is an arithmetic number, because the mean of its divisors is an integer number (899640).

Almost surely, 2^11909516 is an apocalyptic number.

It is an amenable number.

11909516 is a deficient number, since it is larger than the sum of its proper divisors (9681844).

11909516 is a wasteful number, since it uses less digits than its factorization.

11909516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 11909516 is about 3451.0166617969. The cubic root of 11909516 is about 228.3659609664.

The spelling of 11909516 in words is "eleven million, nine hundred nine thousand, five hundred sixteen".