12949470 has 72 divisors (see below), whose sum is σ = 35400456. Its totient is φ = 3405888.

The previous prime is 12949463. The next prime is 12949471. The reversal of 12949470 is 7494921.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12949471) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 177354 + ... + 177426.

It is an arithmetic number, because the mean of its divisors is an integer number (491673).

Almost surely, 2^12949470 is an apocalyptic number.

12949470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12949470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17700228).

12949470 is an abundant number, since it is smaller than the sum of its proper divisors (22450986).

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

12949470 is an frugal number, since it uses more digits than its factorization.

12949470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 12949470 is about 3598.5372028089. The cubic root of 12949470 is about 234.8284246337.

The spelling of 12949470 in words is "twelve million, nine hundred forty-nine thousand, four hundred seventy".