11852409 has 16 divisors (see below), whose sum is σ = 16718400. Its totient is φ = 7448256.

The previous prime is 11852369. The next prime is 11852437. The reversal of 11852409 is 90425811.

It is a happy number.

It is not a de Polignac number, because 11852409 - 2¹² = 11848313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11852459) 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, 14947 + ... + 15719.

It is an arithmetic number, because the mean of its divisors is an integer number (1044900).

Almost surely, 2^11852409 is an apocalyptic number.

11852409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11852409 is a deficient number, since it is larger than the sum of its proper divisors (4865991).

11852409 is a wasteful number, since it uses less digits than its factorization.

11852409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 11852409 is about 3442.7327808007. The cubic root of 11852409 is about 228.0003654965. Note that the first 3 decimals are identical.

The spelling of 11852409 in words is "eleven million, eight hundred fifty-two thousand, four hundred nine".