11778799 has 4 divisors (see below), whose sum is σ = 11806560. Its totient is φ = 11751040.

The previous prime is 11778797. The next prime is 11778847. The reversal of 11778799 is 99787711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99787711 = 53 ⋅1882787.

It is a cyclic number.

It is not a de Polignac number, because 11778799 - 2¹ = 11778797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13234 + ... + 14095.

It is an arithmetic number, because the mean of its divisors is an integer number (2951640).

Almost surely, 2^11778799 is an apocalyptic number.

11778799 is a deficient number, since it is larger than the sum of its proper divisors (27761).

11778799 is an equidigital number, since it uses as much as digits as its factorization.

11778799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27760.

The product of its digits is 222264, while the sum is 49.

The square root of 11778799 is about 3432.0254952433. The cubic root of 11778799 is about 227.5273822855.

The spelling of 11778799 in words is "eleven million, seven hundred seventy-eight thousand, seven hundred ninety-nine".