11785990 has 16 divisors (see below), whose sum is σ = 21352752. Its totient is φ = 4683744.

The previous prime is 11785979. The next prime is 11786009. The reversal of 11785990 is 9958711.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 2184 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (1334547).

Almost surely, 2^11785990 is an apocalyptic number.

11785990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11785990 is a deficient number, since it is larger than the sum of its proper divisors (9566762).

11785990 is a wasteful number, since it uses less digits than its factorization.

11785990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7671.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 11785990 is about 3433.0729674739. The cubic root of 11785990 is about 227.5736749667.

The spelling of 11785990 in words is "eleven million, seven hundred eighty-five thousand, nine hundred ninety".