11798409 has 8 divisors (see below), whose sum is σ = 17978560. Its totient is φ = 6741936.

The previous prime is 11798399. The next prime is 11798417. The reversal of 11798409 is 90489711.

It is a happy number.

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

It is not a de Polignac number, because 11798409 - 2¹¹ = 11796361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11798009) 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, 280894 + ... + 280935.

It is an arithmetic number, because the mean of its divisors is an integer number (2247320).

Almost surely, 2^11798409 is an apocalyptic number.

It is an amenable number.

11798409 is a deficient number, since it is larger than the sum of its proper divisors (6180151).

11798409 is an equidigital number, since it uses as much as digits as its factorization.

11798409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561839.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 11798409 is about 3434.8812206538. The cubic root of 11798409 is about 227.6535790272.

The spelling of 11798409 in words is "eleven million, seven hundred ninety-eight thousand, four hundred nine".