12993129 has 10 divisors (see below), whose sum is σ = 19409610. Its totient is φ = 8662032.

The previous prime is 12993121. The next prime is 12993133. The reversal of 12993129 is 92139921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9753129 + 3240000 = 3123^2 + 1800^2 .

It is not a de Polignac number, because 12993129 - 2³ = 12993121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12993093 and 12993102.

It is not an unprimeable number, because it can be changed into a prime (12993121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 80124 + ... + 80285.

It is an arithmetic number, because the mean of its divisors is an integer number (1940961).

Almost surely, 2^12993129 is an apocalyptic number.

It is an amenable number.

12993129 is a deficient number, since it is larger than the sum of its proper divisors (6416481).

12993129 is an equidigital number, since it uses as much as digits as its factorization.

12993129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160421 (or 160412 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 12993129 is about 3604.5983132660. The cubic root of 12993129 is about 235.0920357776.

The spelling of 12993129 in words is "twelve million, nine hundred ninety-three thousand, one hundred twenty-nine".