12909235 has 4 divisors (see below), whose sum is σ = 15491088. Its totient is φ = 10327384.

The previous prime is 12909223. The next prime is 12909241. The reversal of 12909235 is 53290921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12909235 - 2¹³ = 12901043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12909197 and 12909206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290919 + ... + 1290928.

It is an arithmetic number, because the mean of its divisors is an integer number (3872772).

Almost surely, 2^12909235 is an apocalyptic number.

12909235 is a deficient number, since it is larger than the sum of its proper divisors (2581853).

12909235 is an equidigital number, since it uses as much as digits as its factorization.

12909235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581852.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 12909235 is about 3592.9423875147. The cubic root of 12909235 is about 234.5849623106.

The spelling of 12909235 in words is "twelve million, nine hundred nine thousand, two hundred thirty-five".