11284919 has 4 divisors (see below), whose sum is σ = 11497896. Its totient is φ = 11071944.

The previous prime is 11284909. The next prime is 11284921. The reversal of 11284919 is 91948211.

11284919 = 6² + 7² + ... + 323².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91948211 = 277 ⋅331943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11284919 is a prime.

It is a super-2 number, since 2×11284919² = 254698793673122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11284909) 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 in 3 ways as a sum of consecutive naturals, for example, 106409 + ... + 106514.

It is an arithmetic number, because the mean of its divisors is an integer number (2874474).

Almost surely, 2^11284919 is an apocalyptic number.

11284919 is a deficient number, since it is larger than the sum of its proper divisors (212977).

11284919 is an equidigital number, since it uses as much as digits as its factorization.

11284919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212976.

The product of its digits is 5184, while the sum is 35.

The square root of 11284919 is about 3359.3033503987. The cubic root of 11284919 is about 224.3018292457.

The spelling of 11284919 in words is "eleven million, two hundred eighty-four thousand, nine hundred nineteen".