11399508 has 48 divisors (see below), whose sum is σ = 30072000. Its totient is φ = 3733344.

The previous prime is 11399501. The next prime is 11399527. The reversal of 11399508 is 80599311.

It is a happy number.

It is a super-4 number, since 4×11399508⁴ (a number of 29 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11399501) 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, 5478 + ... + 7266.

It is an arithmetic number, because the mean of its divisors is an integer number (626500).

Almost surely, 2^11399508 is an apocalyptic number.

11399508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11399508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15036000).

11399508 is an abundant number, since it is smaller than the sum of its proper divisors (18672492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11399508 is a wasteful number, since it uses less digits than its factorization.

11399508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 11399508 is about 3376.3157435287. The cubic root of 11399508 is about 225.0584736912.

The spelling of 11399508 in words is "eleven million, three hundred ninety-nine thousand, five hundred eight".