12789949 has 6 divisors (see below), whose sum is σ = 13216830. Its totient is φ = 12376440.

The previous prime is 12789947. The next prime is 12789971. The reversal of 12789949 is 94998721.

12789949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6943225 + 5846724 = 2635^2 + 2418^2 .

It is not a de Polignac number, because 12789949 - 2¹ = 12789947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12789943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5694 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (2202805).

Almost surely, 2^12789949 is an apocalyptic number.

It is an amenable number.

12789949 is a deficient number, since it is larger than the sum of its proper divisors (426881).

12789949 is an equidigital number, since it uses as much as digits as its factorization.

12789949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13371 (or 13340 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The square root of 12789949 is about 3576.3038181899. The cubic root of 12789949 is about 233.8601753109.

The spelling of 12789949 in words is "twelve million, seven hundred eighty-nine thousand, nine hundred forty-nine".