12409960 has 24 divisors (see below), whose sum is σ = 27972630. Its totient is φ = 4955072.

The previous prime is 12409939. The next prime is 12409979. The reversal of 12409960 is 6990421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4218916 + 8191044 = 2054^2 + 2862^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22002 + ... + 22558.

Almost surely, 2^12409960 is an apocalyptic number.

12409960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12409960 is an abundant number, since it is smaller than the sum of its proper divisors (15562670).

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

12409960 is an frugal number, since it uses more digits than its factorization.

12409960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 12409960 is about 3522.7773134276. Note that the first 3 decimals coincide. The cubic root of 12409960 is about 231.5208601230.

The spelling of 12409960 in words is "twelve million, four hundred nine thousand, nine hundred sixty".