11780999 has 8 divisors (see below), whose sum is σ = 12074400. Its totient is φ = 11490336.

The previous prime is 11780971. The next prime is 11781001. The reversal of 11780999 is 99908711.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11780999 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 (11780299) 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 7 ways as a sum of consecutive naturals, for example, 9989 + ... + 11105.

It is an arithmetic number, because the mean of its divisors is an integer number (1509300).

Almost surely, 2^11780999 is an apocalyptic number.

11780999 is a deficient number, since it is larger than the sum of its proper divisors (293401).

11780999 is a wasteful number, since it uses less digits than its factorization.

11780999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 11780999 is about 3432.3459907183. The cubic root of 11780999 is about 227.5415469747.

The spelling of 11780999 in words is "eleven million, seven hundred eighty thousand, nine hundred ninety-nine".