12929865 has 32 divisors (see below), whose sum is σ = 22665216. Its totient is φ = 6255360.

The previous prime is 12929863. The next prime is 12929879. The reversal of 12929865 is 56892921.

It is not a de Polignac number, because 12929865 - 2¹ = 12929863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12929863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11352 + ... + 12438.

It is an arithmetic number, because the mean of its divisors is an integer number (708288).

Almost surely, 2^12929865 is an apocalyptic number.

12929865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12929865 is a deficient number, since it is larger than the sum of its proper divisors (9735351).

12929865 is a wasteful number, since it uses less digits than its factorization.

12929865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

The product of its digits is 77760, while the sum is 42.

The square root of 12929865 is about 3595.8121474849. The cubic root of 12929865 is about 234.7098577077.

The spelling of 12929865 in words is "twelve million, nine hundred twenty-nine thousand, eight hundred sixty-five".