12988907 has 4 divisors (see below), whose sum is σ = 13407936. Its totient is φ = 12569880.

The previous prime is 12988891. The next prime is 12988931. The reversal of 12988907 is 70988921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70988921 = 19 ⋅3736259.

It is not a de Polignac number, because 12988907 - 2⁴ = 12988891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12988957) 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 3 ways as a sum of consecutive naturals, for example, 209468 + ... + 209529.

It is an arithmetic number, because the mean of its divisors is an integer number (3351984).

Almost surely, 2^12988907 is an apocalyptic number.

12988907 is a deficient number, since it is larger than the sum of its proper divisors (419029).

12988907 is an equidigital number, since it uses as much as digits as its factorization.

12988907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419028.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 12988907 is about 3604.0126248392. The cubic root of 12988907 is about 235.0665693407.

The spelling of 12988907 in words is "twelve million, nine hundred eighty-eight thousand, nine hundred seven".