11199990 has 32 divisors (see below), whose sum is σ = 27749376. Its totient is φ = 2890080.

The previous prime is 11199989. The next prime is 11200001. The reversal of 11199990 is 9999111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5092 + ... + 6951.

It is an arithmetic number, because the mean of its divisors is an integer number (867168).

Almost surely, 2^11199990 is an apocalyptic number.

11199990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11199990 is an abundant number, since it is smaller than the sum of its proper divisors (16549386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11199990 is a wasteful number, since it uses less digits than its factorization.

11199990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12084.

The product of its (nonzero) digits is 6561, while the sum is 39.

The square root of 11199990 is about 3346.6386121002. The cubic root of 11199990 is about 223.7377218276.

The spelling of 11199990 in words is "eleven million, one hundred ninety-nine thousand, nine hundred ninety".