11399888 has 10 divisors (see below), whose sum is σ = 22087314. Its totient is φ = 5699936.

The previous prime is 11399879. The next prime is 11399891. The reversal of 11399888 is 88899311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10163344 + 1236544 = 3188^2 + 1112^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 356231 + ... + 356262.

Almost surely, 2^11399888 is an apocalyptic number.

It is an amenable number.

11399888 is a deficient number, since it is larger than the sum of its proper divisors (10687426).

11399888 is an equidigital number, since it uses as much as digits as its factorization.

11399888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712501 (or 712495 counting only the distinct ones).

The product of its digits is 124416, while the sum is 47.

The square root of 11399888 is about 3376.3720174175. The cubic root of 11399888 is about 225.0609744211.

It can be divided in two parts, 113 and 99888, that added together give a palindrome (100001).

The spelling of 11399888 in words is "eleven million, three hundred ninety-nine thousand, eight hundred eighty-eight".