11806399 has 8 divisors (see below), whose sum is σ = 12958848. Its totient is φ = 10667160.

The previous prime is 11806397. The next prime is 11806409. The reversal of 11806399 is 99360811.

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 11806399 - 2¹ = 11806397 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 (11806397) 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, 1377 + ... + 5050.

It is an arithmetic number, because the mean of its divisors is an integer number (1619856).

Almost surely, 2^11806399 is an apocalyptic number.

11806399 is the 1837-th nonagonal number.

11806399 is a deficient number, since it is larger than the sum of its proper divisors (1152449).

11806399 is a wasteful number, since it uses less digits than its factorization.

11806399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 11806399 is about 3436.0440916845. The cubic root of 11806399 is about 227.7049571875.

The spelling of 11806399 in words is "eleven million, eight hundred six thousand, three hundred ninety-nine".