11939850 has 108 divisors (see below), whose sum is σ = 34957026. Its totient is φ = 2920320.

The previous prime is 11939849. The next prime is 11939881. The reversal of 11939850 is 5893911.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 710649 + 11229201 = 843^2 + 3351^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 75972 + ... + 76128.

Almost surely, 2^11939850 is an apocalyptic number.

11939850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11939850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17478513).

11939850 is an abundant number, since it is smaller than the sum of its proper divisors (23017176).

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

11939850 is a wasteful number, since it uses less digits than its factorization.

11939850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 11939850 is about 3455.4088036005. The cubic root of 11939850 is about 228.5596822461.

The spelling of 11939850 in words is "eleven million, nine hundred thirty-nine thousand, eight hundred fifty".