12888961 has 4 divisors (see below), whose sum is σ = 12913072. Its totient is φ = 12864852.

The previous prime is 12888943. The next prime is 12888971. The reversal of 12888961 is 16988821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16988821 = 397 ⋅42793.

It is a cyclic number.

It is not a de Polignac number, because 12888961 - 2¹⁹ = 12364673 is a prime.

It is a super-2 number, since 2×12888961² = 332250631319042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12888971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11235 + ... + 12328.

It is an arithmetic number, because the mean of its divisors is an integer number (3228268).

Almost surely, 2^12888961 is an apocalyptic number.

It is an amenable number.

12888961 is a deficient number, since it is larger than the sum of its proper divisors (24111).

12888961 is an equidigital number, since it uses as much as digits as its factorization.

12888961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24110.

The product of its digits is 55296, while the sum is 43.

The square root of 12888961 is about 3590.1199144318. The cubic root of 12888961 is about 234.4620924566.

The spelling of 12888961 in words is "twelve million, eight hundred eighty-eight thousand, nine hundred sixty-one".