12439270 has 8 divisors (see below), whose sum is σ = 22390704. Its totient is φ = 4975704.

The previous prime is 12439253. The next prime is 12439279. The reversal of 12439270 is 7293421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439279) 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, 621954 + ... + 621973.

It is an arithmetic number, because the mean of its divisors is an integer number (2798838).

Almost surely, 2^12439270 is an apocalyptic number.

12439270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12439270 is a deficient number, since it is larger than the sum of its proper divisors (9951434).

12439270 is a wasteful number, since it uses less digits than its factorization.

12439270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243934.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12439270 is about 3526.9349299356. The cubic root of 12439270 is about 231.7029864443.

The spelling of 12439270 in words is "twelve million, four hundred thirty-nine thousand, two hundred seventy".