11538899 has 2 divisors, whose sum is σ = 11538900. Its totient is φ = 11538898.

The previous prime is 11538889. The next prime is 11538911. The reversal of 11538899 is 99883511.

It is a happy number.

11538899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11538899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11538889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769449 + 5769450.

It is an arithmetic number, because the mean of its divisors is an integer number (5769450).

Almost surely, 2^11538899 is an apocalyptic number.

11538899 is a deficient number, since it is larger than the sum of its proper divisors (1).

11538899 is an equidigital number, since it uses as much as digits as its factorization.

11538899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 44.

The square root of 11538899 is about 3396.8954944184. The cubic root of 11538899 is about 225.9720838988.

The spelling of 11538899 in words is "eleven million, five hundred thirty-eight thousand, eight hundred ninety-nine".