12939000 has 128 divisors (see below), whose sum is σ = 42681600. Its totient is φ = 3254400.

The previous prime is 12938987. The next prime is 12939007. The reversal of 12939000 is 93921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939007) 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, 56887 + ... + 57113.

It is an arithmetic number, because the mean of its divisors is an integer number (333450).

Almost surely, 2^12939000 is an apocalyptic number.

12939000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12939000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21340800).

12939000 is an abundant number, since it is smaller than the sum of its proper divisors (29742600).

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

12939000 is a wasteful number, since it uses less digits than its factorization.

12939000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 12939000 is about 3597.0821508551. The cubic root of 12939000 is about 234.7651191719.

The spelling of 12939000 in words is "twelve million, nine hundred thirty-nine thousand".