12439086 has 64 divisors (see below), whose sum is σ = 28788480. Its totient is φ = 3548160.

The previous prime is 12439081. The next prime is 12439093. The reversal of 12439086 is 68093421.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128190 + ... + 128286.

It is an arithmetic number, because the mean of its divisors is an integer number (449820).

Almost surely, 2^12439086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12439086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14394240).

12439086 is an abundant number, since it is smaller than the sum of its proper divisors (16349394).

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

12439086 is a wasteful number, since it uses less digits than its factorization.

12439086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

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

The square root of 12439086 is about 3526.9088448668. The cubic root of 12439086 is about 231.7018439989.

The spelling of 12439086 in words is "twelve million, four hundred thirty-nine thousand, eighty-six".