11235989 has 2 divisors, whose sum is σ = 11235990. Its totient is φ = 11235988.

The previous prime is 11235979. The next prime is 11236003. The reversal of 11235989 is 98953211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6461764 + 4774225 = 2542^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 11235989 - 2¹² = 11231893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11235979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5617994 + 5617995.

It is an arithmetic number, because the mean of its divisors is an integer number (5617995).

Almost surely, 2^11235989 is an apocalyptic number.

It is an amenable number.

11235989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11235989 is an equidigital number, since it uses as much as digits as its factorization.

11235989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 38.

The square root of 11235989 is about 3352.0126789736. The cubic root of 11235989 is about 223.9771780001.

The spelling of 11235989 in words is "eleven million, two hundred thirty-five thousand, nine hundred eighty-nine".