12649407 has 4 divisors (see below), whose sum is σ = 16865880. Its totient is φ = 8432936.

The previous prime is 12649391. The next prime is 12649409. The reversal of 12649407 is 70494621.

It is a happy number.

12649407 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.

It is a cyclic number.

It is not a de Polignac number, because 12649407 - 2⁴ = 12649391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649409) 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, 2108232 + ... + 2108237.

It is an arithmetic number, because the mean of its divisors is an integer number (4216470).

Almost surely, 2^12649407 is an apocalyptic number.

12649407 is a deficient number, since it is larger than the sum of its proper divisors (4216473).

12649407 is an equidigital number, since it uses as much as digits as its factorization.

12649407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216472.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 12649407 is about 3556.6004836079. The cubic root of 12649407 is about 233.0004297978. Note that the first 3 decimals are identical.

The spelling of 12649407 in words is "twelve million, six hundred forty-nine thousand, four hundred seven".