11217279 has 8 divisors (see below), whose sum is σ = 15015600. Its totient is φ = 7448576.

The previous prime is 11217251. The next prime is 11217301. The reversal of 11217279 is 97271211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11217279 - 2²¹ = 9120127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11217379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6504 + ... + 8045.

It is an arithmetic number, because the mean of its divisors is an integer number (1876950).

Almost surely, 2^11217279 is an apocalyptic number.

11217279 is a deficient number, since it is larger than the sum of its proper divisors (3798321).

11217279 is a wasteful number, since it uses less digits than its factorization.

11217279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14809.

The product of its digits is 1764, while the sum is 30.

The square root of 11217279 is about 3349.2206556153. The cubic root of 11217279 is about 223.8527877869.

It can be divided in two parts, 112 and 17279, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 11217279 in words is "eleven million, two hundred seventeen thousand, two hundred seventy-nine".