12943900 has 18 divisors (see below), whose sum is σ = 28088480. Its totient is φ = 5177520.

The previous prime is 12943873. The next prime is 12943901. The reversal of 12943900 is 934921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12943901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64620 + ... + 64819.

Almost surely, 2^12943900 is an apocalyptic number.

12943900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12943900 is an abundant number, since it is smaller than the sum of its proper divisors (15144580).

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

12943900 is a wasteful number, since it uses less digits than its factorization.

12943900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129453 (or 129446 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12943900 is about 3597.7631939860. The cubic root of 12943900 is about 234.7947506196.

The spelling of 12943900 in words is "twelve million, nine hundred forty-three thousand, nine hundred".