11415289 has 2 divisors, whose sum is σ = 11415290. Its totient is φ = 11415288.

The previous prime is 11415281. The next prime is 11415307. The reversal of 11415289 is 98251411.

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., 9659664 + 1755625 = 3108^2 + 1325^2 .

It is an emirp because it is prime and its reverse (98251411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11415289 - 2³ = 11415281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11415289.

It is not a weakly prime, because it can be changed into another prime (11415281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5707644 + 5707645.

It is an arithmetic number, because the mean of its divisors is an integer number (5707645).

Almost surely, 2^11415289 is an apocalyptic number.

It is an amenable number.

11415289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11415289 is an equidigital number, since it uses as much as digits as its factorization.

11415289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 31.

The square root of 11415289 is about 3378.6519501126. The cubic root of 11415289 is about 225.1622796367.

The spelling of 11415289 in words is "eleven million, four hundred fifteen thousand, two hundred eighty-nine".