12239900 has 18 divisors (see below), whose sum is σ = 26560800. Its totient is φ = 4895920.

The previous prime is 12239897. The next prime is 12239911. The reversal of 12239900 is 993221.

It is a self number, because there is not a number n which added to its sum of digits gives 12239900.

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 5 ways as a sum of consecutive naturals, for example, 61100 + ... + 61299.

It is an arithmetic number, because the mean of its divisors is an integer number (1475600).

Almost surely, 2^12239900 is an apocalyptic number.

12239900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12239900 is an abundant number, since it is smaller than the sum of its proper divisors (14320900).

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

12239900 is a wasteful number, since it uses less digits than its factorization.

12239900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122413 (or 122406 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 12239900 is about 3498.5568453292. The cubic root of 12239900 is about 230.4584428887.

It can be divided in two parts, 12 and 239900, that multiplied together give a triangular number (2878800 = T₂₃₉₉).

The spelling of 12239900 in words is "twelve million, two hundred thirty-nine thousand, nine hundred".