11217389 has 2 divisors, whose sum is σ = 11217390. Its totient is φ = 11217388.

The previous prime is 11217383. The next prime is 11217407. The reversal of 11217389 is 98371211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6041764 + 5175625 = 2458^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 11217389 - 2⁴ = 11217373 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 (11217383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608694 + 5608695.

It is an arithmetic number, because the mean of its divisors is an integer number (5608695).

Almost surely, 2^11217389 is an apocalyptic number.

It is an amenable number.

11217389 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217389 is an equidigital number, since it uses as much as digits as its factorization.

11217389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 11217389 is about 3349.2370773058. The cubic root of 11217389 is about 223.8535195070.

The spelling of 11217389 in words is "eleven million, two hundred seventeen thousand, three hundred eighty-nine".