11238889 has 2 divisors, whose sum is σ = 11238890. Its totient is φ = 11238888.

The previous prime is 11238869. The next prime is 11238901. The reversal of 11238889 is 98883211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 870489 = 3220^2 + 933^2 .

It is a cyclic number.

It is not a de Polignac number, because 11238889 - 2⁷ = 11238761 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11238859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5619444 + 5619445.

It is an arithmetic number, because the mean of its divisors is an integer number (5619445).

Almost surely, 2^11238889 is an apocalyptic number.

It is an amenable number.

11238889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11238889 is an equidigital number, since it uses as much as digits as its factorization.

11238889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 40.

The square root of 11238889 is about 3352.4452269948. The cubic root of 11238889 is about 223.9964457876.

The spelling of 11238889 in words is "eleven million, two hundred thirty-eight thousand, eight hundred eighty-nine".