12989755 has 8 divisors (see below), whose sum is σ = 15748992. Its totient is φ = 10284288.

The previous prime is 12989747. The next prime is 12989773. The reversal of 12989755 is 55798921.

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

It is a cyclic number.

It is not a de Polignac number, because 12989755 - 2³ = 12989747 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 12907 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (1968624).

Almost surely, 2^12989755 is an apocalyptic number.

12989755 is a deficient number, since it is larger than the sum of its proper divisors (2759237).

12989755 is an equidigital number, since it uses as much as digits as its factorization.

12989755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26885.

The product of its digits is 226800, while the sum is 46.

The square root of 12989755 is about 3604.1302695657. The cubic root of 12989755 is about 235.0716847855.

The spelling of 12989755 in words is "twelve million, nine hundred eighty-nine thousand, seven hundred fifty-five".