12491946 has 48 divisors (see below), whose sum is σ = 28474368. Its totient is φ = 3952800.

The previous prime is 12491939. The next prime is 12491971. The reversal of 12491946 is 64919421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12491946.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33855 + ... + 34221.

It is an arithmetic number, because the mean of its divisors is an integer number (593216).

Almost surely, 2^12491946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12491946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14237184).

12491946 is an abundant number, since it is smaller than the sum of its proper divisors (15982422).

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

12491946 is a wasteful number, since it uses less digits than its factorization.

12491946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 464 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12491946 is about 3534.3947147991. The cubic root of 12491946 is about 232.0295864963.

The spelling of 12491946 in words is "twelve million, four hundred ninety-one thousand, nine hundred forty-six".