11215889 has 2 divisors, whose sum is σ = 11215890. Its totient is φ = 11215888.

The previous prime is 11215829. The next prime is 11215907. The reversal of 11215889 is 98851211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10627600 + 588289 = 3260^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215889 - 2¹² = 11211793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11215829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607944 + 5607945.

It is an arithmetic number, because the mean of its divisors is an integer number (5607945).

Almost surely, 2^11215889 is an apocalyptic number.

It is an amenable number.

11215889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215889 is an equidigital number, since it uses as much as digits as its factorization.

11215889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 35.

The square root of 11215889 is about 3349.0131382245. The cubic root of 11215889 is about 223.8435410932.

The spelling of 11215889 in words is "eleven million, two hundred fifteen thousand, eight hundred eighty-nine".