12969555 has 32 divisors (see below), whose sum is σ = 22171968. Its totient is φ = 6451200.

The previous prime is 12969553. The next prime is 12969559. The reversal of 12969555 is 55596921.

It is not a de Polignac number, because 12969555 - 2¹ = 12969553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12969553) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 46015 + ... + 46295.

It is an arithmetic number, because the mean of its divisors is an integer number (692874).

Almost surely, 2^12969555 is an apocalyptic number.

12969555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12969555 is a deficient number, since it is larger than the sum of its proper divisors (9202413).

12969555 is a wasteful number, since it uses less digits than its factorization.

12969555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487.

The product of its digits is 121500, while the sum is 42.

The square root of 12969555 is about 3601.3268388193. The cubic root of 12969555 is about 234.9497704627.

The spelling of 12969555 in words is "twelve million, nine hundred sixty-nine thousand, five hundred fifty-five".