12993949 has 4 divisors (see below), whose sum is σ = 13270464. Its totient is φ = 12717436.

The previous prime is 12993947. The next prime is 12993971. The reversal of 12993949 is 94939921.

12993949 is digitally balanced in base 2, because in such base 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.

It is a cyclic number.

It is not a de Polignac number, because 12993949 - 2¹ = 12993947 is a prime.

It is a super-2 number, since 2×12993949² = 337685421229202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12993899 and 12993908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993941) 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, 138187 + ... + 138280.

It is an arithmetic number, because the mean of its divisors is an integer number (3317616).

Almost surely, 2^12993949 is an apocalyptic number.

It is an amenable number.

12993949 is a deficient number, since it is larger than the sum of its proper divisors (276515).

12993949 is an equidigital number, since it uses as much as digits as its factorization.

12993949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276514.

The product of its digits is 157464, while the sum is 46.

The square root of 12993949 is about 3604.7120550746. The cubic root of 12993949 is about 235.0969812483.

The spelling of 12993949 in words is "twelve million, nine hundred ninety-three thousand, nine hundred forty-nine".