12949917 has 16 divisors (see below), whose sum is σ = 17690880. Its totient is φ = 8424000.

The previous prime is 12949883. The next prime is 12949919. The reversal of 12949917 is 71994921.

It is not a de Polignac number, because 12949917 - 2⁷ = 12949789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12949919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23667 + ... + 24207.

It is an arithmetic number, because the mean of its divisors is an integer number (1105680).

Almost surely, 2^12949917 is an apocalyptic number.

It is an amenable number.

12949917 is a deficient number, since it is larger than the sum of its proper divisors (4740963).

12949917 is a wasteful number, since it uses less digits than its factorization.

12949917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 40824, while the sum is 42.

The square root of 12949917 is about 3598.5993108430. The cubic root of 12949917 is about 234.8311266001.

It can be divided in two parts, 1294 and 9917, that added together give a palindrome (11211).

The spelling of 12949917 in words is "twelve million, nine hundred forty-nine thousand, nine hundred seventeen".