12919900 has 36 divisors (see below), whose sum is σ = 32043088. Its totient is φ = 4429440.

The previous prime is 12919891. The next prime is 12919903. The reversal of 12919900 is 991921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12919903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8529 + ... + 9928.

Almost surely, 2^12919900 is an apocalyptic number.

12919900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12919900 is an abundant number, since it is smaller than the sum of its proper divisors (19123188).

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

12919900 is a wasteful number, since it uses less digits than its factorization.

12919900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18478 (or 18471 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 12919900 is about 3594.4262407233. The cubic root of 12919900 is about 234.6495455326.

The spelling of 12919900 in words is "twelve million, nine hundred nineteen thousand, nine hundred".