11399999 has 8 divisors (see below), whose sum is σ = 12315072. Its totient is φ = 10490400.

The previous prime is 11399989. The next prime is 11400017. The reversal of 11399999 is 99999311.

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 11399999 - 2²⁰ = 10351423 is a prime.

It is a Duffinian number.

11399999 is a modest number, since divided by 9999 gives 1139 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11399939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3674 + ... + 6024.

It is an arithmetic number, because the mean of its divisors is an integer number (1539384).

Almost surely, 2^11399999 is an apocalyptic number.

11399999 is a deficient number, since it is larger than the sum of its proper divisors (915073).

11399999 is a wasteful number, since it uses less digits than its factorization.

11399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737.

The product of its digits is 177147, while the sum is 50.

The square root of 11399999 is about 3376.3884551396. The cubic root of 11399999 is about 225.0617048870.

The spelling of 11399999 in words is "eleven million, three hundred ninety-nine thousand, nine hundred ninety-nine".