11388913 has 2 divisors, whose sum is σ = 11388914. Its totient is φ = 11388912.

The previous prime is 11388907. The next prime is 11388941. The reversal of 11388913 is 31988311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7656289 + 3732624 = 2767^2 + 1932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11388913 is a prime.

It is not a weakly prime, because it can be changed into another prime (11388943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694456 + 5694457.

It is an arithmetic number, because the mean of its divisors is an integer number (5694457).

Almost surely, 2^11388913 is an apocalyptic number.

It is an amenable number.

11388913 is a deficient number, since it is larger than the sum of its proper divisors (1).

11388913 is an equidigital number, since it uses as much as digits as its factorization.

11388913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 11388913 is about 3374.7463608396. The cubic root of 11388913 is about 224.9887270072.

The spelling of 11388913 in words is "eleven million, three hundred eighty-eight thousand, nine hundred thirteen".