11399556 has 36 divisors (see below), whose sum is σ = 30943248. Its totient is φ = 3256848.

The previous prime is 11399551. The next prime is 11399593. The reversal of 11399556 is 65599311.

11399556 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11399551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9106 + ... + 10281.

Almost surely, 2^11399556 is an apocalyptic number.

It is an amenable number.

11399556 is an abundant number, since it is smaller than the sum of its proper divisors (19543692).

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

11399556 is a wasteful number, since it uses less digits than its factorization.

11399556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408 (or 19399 counting only the distinct ones).

The product of its digits is 36450, while the sum is 39.

The square root of 11399556 is about 3376.3228518612. The cubic root of 11399556 is about 225.0587895760.

The spelling of 11399556 in words is "eleven million, three hundred ninety-nine thousand, five hundred fifty-six".