11388869 has 2 divisors, whose sum is σ = 11388870. Its totient is φ = 11388868.

The previous prime is 11388863. The next prime is 11388893. The reversal of 11388869 is 96888311.

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., 10640644 + 748225 = 3262^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 11388869 - 2¹² = 11384773 is a prime.

It is a super-2 number, since 2×11388869² = 259412674198322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11388863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5694434 + 5694435.

It is an arithmetic number, because the mean of its divisors is an integer number (5694435).

Almost surely, 2^11388869 is an apocalyptic number.

It is an amenable number.

11388869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11388869 is an equidigital number, since it uses as much as digits as its factorization.

11388869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 44.

The square root of 11388869 is about 3374.7398418248. The cubic root of 11388869 is about 224.9884372659.

The spelling of 11388869 in words is "eleven million, three hundred eighty-eight thousand, eight hundred sixty-nine".