12993137 has 4 divisors (see below), whose sum is σ = 13558080. Its totient is φ = 12428196.

The previous prime is 12993133. The next prime is 12993173. The reversal of 12993137 is 73139921.

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 12993137 - 2² = 12993133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12993097 and 12993106.

It is not an unprimeable number, because it can be changed into a prime (12993133) 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, 282437 + ... + 282482.

It is an arithmetic number, because the mean of its divisors is an integer number (3389520).

Almost surely, 2^12993137 is an apocalyptic number.

It is an amenable number.

12993137 is a deficient number, since it is larger than the sum of its proper divisors (564943).

12993137 is an equidigital number, since it uses as much as digits as its factorization.

12993137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564942.

The product of its digits is 10206, while the sum is 35.

The square root of 12993137 is about 3604.5994229595. The cubic root of 12993137 is about 235.0920840271.

The spelling of 12993137 in words is "twelve million, nine hundred ninety-three thousand, one hundred thirty-seven".