11399990 has 32 divisors (see below), whose sum is σ = 23630400. Its totient is φ = 3878784.

The previous prime is 11399989. The next prime is 11400017. The reversal of 11399990 is 9999311.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 9884 + ... + 10976.

It is an arithmetic number, because the mean of its divisors is an integer number (738450).

Almost surely, 2^11399990 is an apocalyptic number.

11399990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11399990 is an abundant number, since it is smaller than the sum of its proper divisors (12230410).

11399990 is a wasteful number, since it uses less digits than its factorization.

11399990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 11399990 is about 3376.3871223543. The cubic root of 11399990 is about 225.0616456602.

The spelling of 11399990 in words is "eleven million, three hundred ninety-nine thousand, nine hundred ninety".