11696399 has 16 divisors (see below), whose sum is σ = 13837824. Its totient is φ = 9746400.

The previous prime is 11696383. The next prime is 11696413. The reversal of 11696399 is 99369611.

11696399 = 212² + 213² + ... + 354².

It is a happy number.

It is a Cunningham number, because it is equal to 3420²-1.

It is a cyclic number.

It is not a de Polignac number, because 11696399 - 2⁴ = 11696383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11696339) 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 15 ways as a sum of consecutive naturals, for example, 37454 + ... + 37764.

It is an arithmetic number, because the mean of its divisors is an integer number (864864).

Almost surely, 2^11696399 is an apocalyptic number.

11696399 is a deficient number, since it is larger than the sum of its proper divisors (2141425).

11696399 is a wasteful number, since it uses less digits than its factorization.

11696399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its digits is 78732, while the sum is 44.

The square root of 11696399 is about 3419.9998538012. Note that the first 3 decimals coincide. The cubic root of 11696399 is about 226.9955752209.

The spelling of 11696399 in words is "eleven million, six hundred ninety-six thousand, three hundred ninety-nine".