12439806 has 16 divisors (see below), whose sum is σ = 24930048. Its totient is φ = 4138200.

The previous prime is 12439783. The next prime is 12439829. The reversal of 12439806 is 60893421.

It is an interprime number because it is at equal distance from previous prime (12439783) and next prime (12439829).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (1558128).

Almost surely, 2^12439806 is an apocalyptic number.

12439806 is an abundant number, since it is smaller than the sum of its proper divisors (12490242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12439806 is a wasteful number, since it uses less digits than its factorization.

12439806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 12439806 is about 3527.0109157756. The cubic root of 12439806 is about 231.7063143732.

The spelling of 12439806 in words is "twelve million, four hundred thirty-nine thousand, eight hundred six".