12993909 has 8 divisors (see below), whose sum is σ = 17344320. Its totient is φ = 8653056.

The previous prime is 12993907. The next prime is 12993917. The reversal of 12993909 is 90939921.

It is a happy number.

12993909 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12993909 - 2¹ = 12993907 is a prime.

It is a super-2 number, since 2×12993909² = 337683342200562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872 + ... + 5430.

It is an arithmetic number, because the mean of its divisors is an integer number (2168040).

Almost surely, 2^12993909 is an apocalyptic number.

It is an amenable number.

12993909 is a deficient number, since it is larger than the sum of its proper divisors (4350411).

12993909 is a wasteful number, since it uses less digits than its factorization.

12993909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779.

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 12993909 is about 3604.7065067769. The cubic root of 12993909 is about 235.0967400106.

The spelling of 12993909 in words is "twelve million, nine hundred ninety-three thousand, nine hundred nine".