12902889 has 4 divisors (see below), whose sum is σ = 17203856. Its totient is φ = 8601924.

The previous prime is 12902873. The next prime is 12902891. The reversal of 12902889 is 98820921.

12902889 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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: 98820921 = 3 ⋅32940307.

It is not a de Polignac number, because 12902889 - 2⁴ = 12902873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12902849) 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, 2150479 + ... + 2150484.

It is an arithmetic number, because the mean of its divisors is an integer number (4300964).

Almost surely, 2^12902889 is an apocalyptic number.

It is an amenable number.

12902889 is a deficient number, since it is larger than the sum of its proper divisors (4300967).

12902889 is an equidigital number, since it uses as much as digits as its factorization.

12902889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300966.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 12902889 is about 3592.0591587556. The cubic root of 12902889 is about 234.5465164442.

The spelling of 12902889 in words is "twelve million, nine hundred two thousand, eight hundred eighty-nine".