12909722 has 8 divisors (see below), whose sum is σ = 22130976. Its totient is φ = 5532732.

The previous prime is 12909709. The next prime is 12909751. The reversal of 12909722 is 22790921.

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

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 3 ways as a sum of consecutive naturals, for example, 461048 + ... + 461075.

It is an arithmetic number, because the mean of its divisors is an integer number (2766372).

Almost surely, 2^12909722 is an apocalyptic number.

12909722 is a deficient number, since it is larger than the sum of its proper divisors (9221254).

12909722 is an equidigital number, since it uses as much as digits as its factorization.

12909722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922132.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 12909722 is about 3593.0101586274. The cubic root of 12909722 is about 234.5879121740.

It can be divided in two parts, 12909 and 722, that added together give a palindrome (13631).

The spelling of 12909722 in words is "twelve million, nine hundred nine thousand, seven hundred twenty-two".