12464639 has 4 divisors (see below), whose sum is σ = 13597800. Its totient is φ = 11331480.

The previous prime is 12464623. The next prime is 12464651. The reversal of 12464639 is 93646421.

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 12464639 - 2⁴ = 12464623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12464599 and 12464608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12461639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566564 + ... + 566585.

It is an arithmetic number, because the mean of its divisors is an integer number (3399450).

Almost surely, 2^12464639 is an apocalyptic number.

12464639 is a deficient number, since it is larger than the sum of its proper divisors (1133161).

12464639 is a wasteful number, since it uses less digits than its factorization.

12464639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133160.

The product of its digits is 31104, while the sum is 35.

The square root of 12464639 is about 3530.5295636774. The cubic root of 12464639 is about 231.8603933665.

It can be divided in two parts, 1246 and 4639, that added together give a palindrome (5885).

The spelling of 12464639 in words is "twelve million, four hundred sixty-four thousand, six hundred thirty-nine".