12902789 has 4 divisors (see below), whose sum is σ = 13319040. Its totient is φ = 12486540.

The previous prime is 12902783. The next prime is 12902801. The reversal of 12902789 is 98720921.

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.

It is a cyclic number.

It is not a de Polignac number, because 12902789 - 2¹² = 12898693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12902783) 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, 208079 + ... + 208140.

It is an arithmetic number, because the mean of its divisors is an integer number (3329760).

Almost surely, 2^12902789 is an apocalyptic number.

It is an amenable number.

12902789 is a deficient number, since it is larger than the sum of its proper divisors (416251).

12902789 is an equidigital number, since it uses as much as digits as its factorization.

12902789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416250.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 12902789 is about 3592.0452391361. The cubic root of 12902789 is about 234.5459105149.

The spelling of 12902789 in words is "twelve million, nine hundred two thousand, seven hundred eighty-nine".