11278799 has 16 divisors (see below), whose sum is σ = 13689600. Its totient is φ = 9077184.

The previous prime is 11278789. The next prime is 11278801. The reversal of 11278799 is 99787211.

It is a cyclic number.

It is not a de Polignac number, because 11278799 - 2⁴ = 11278783 is a prime.

It is a super-2 number, since 2×11278799² = 254422613764802, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11278759) 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 15 ways as a sum of consecutive naturals, for example, 17912 + ... + 18530.

It is an arithmetic number, because the mean of its divisors is an integer number (855600).

Almost surely, 2^11278799 is an apocalyptic number.

11278799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11278799 is a deficient number, since it is larger than the sum of its proper divisors (2410801).

11278799 is a wasteful number, since it uses less digits than its factorization.

11278799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782.

The product of its digits is 63504, while the sum is 44.

The square root of 11278799 is about 3358.3923237168. The cubic root of 11278799 is about 224.2612743713.

The spelling of 11278799 in words is "eleven million, two hundred seventy-eight thousand, seven hundred ninety-nine".