12949861 has 8 divisors (see below), whose sum is σ = 13284000. Its totient is φ = 12619152.

The previous prime is 12949841. The next prime is 12949877. The reversal of 12949861 is 16894921.

12949861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12949861 - 2⁵ = 12949829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12949841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7890 + ... + 9388.

It is an arithmetic number, because the mean of its divisors is an integer number (1660500).

Almost surely, 2^12949861 is an apocalyptic number.

It is an amenable number.

12949861 is a deficient number, since it is larger than the sum of its proper divisors (334139).

12949861 is a wasteful number, since it uses less digits than its factorization.

12949861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715.

The product of its digits is 31104, while the sum is 40.

The square root of 12949861 is about 3598.5915300295. The cubic root of 12949861 is about 234.8307881021.

The spelling of 12949861 in words is "twelve million, nine hundred forty-nine thousand, eight hundred sixty-one".