12909522 has 16 divisors (see below), whose sum is σ = 26517312. Its totient is φ = 4186800.

The previous prime is 12909521. The next prime is 12909527. The reversal of 12909522 is 22590921.

It is a super-3 number, since 3×12909522³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12909522.

It is not an unprimeable number, because it can be changed into a prime (12909521) 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, 28854 + ... + 29297.

It is an arithmetic number, because the mean of its divisors is an integer number (1657332).

Almost surely, 2^12909522 is an apocalyptic number.

12909522 is an abundant number, since it is smaller than the sum of its proper divisors (13607790).

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

12909522 is a wasteful number, since it uses less digits than its factorization.

12909522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58193.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12909522 is about 3592.9823267030. The cubic root of 12909522 is about 234.5867007401.

It can be divided in two parts, 12909 and 522, that added together give a palindrome (13431).

The spelling of 12909522 in words is "twelve million, nine hundred nine thousand, five hundred twenty-two".