11549990 has 16 divisors (see below), whose sum is σ = 20930400. Its totient is φ = 4588800.

The previous prime is 11549983. The next prime is 11550029. The reversal of 11549990 is 9994511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2315 + ... + 5334.

It is an arithmetic number, because the mean of its divisors is an integer number (1308150).

Almost surely, 2^11549990 is an apocalyptic number.

11549990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11549990 is a deficient number, since it is larger than the sum of its proper divisors (9380410).

11549990 is a wasteful number, since it uses less digits than its factorization.

11549990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 11549990 is about 3398.5276223683. The cubic root of 11549990 is about 226.0444609318.

It can be divided in two parts, 115 and 49990, that added together give a palindrome (50105).

The spelling of 11549990 in words is "eleven million, five hundred forty-nine thousand, nine hundred ninety".