12549979 has 8 divisors (see below), whose sum is σ = 13668480. Its totient is φ = 11453376.

The previous prime is 12549913. The next prime is 12550001. The reversal of 12549979 is 97994521.

It is a happy number.

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 12549979 - 2¹³ = 12541787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12549379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267 + ... + 6580.

It is an arithmetic number, because the mean of its divisors is an integer number (1708560).

Almost surely, 2^12549979 is an apocalyptic number.

12549979 is a deficient number, since it is larger than the sum of its proper divisors (1118501).

12549979 is a wasteful number, since it uses less digits than its factorization.

12549979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10949.

The product of its digits is 204120, while the sum is 46.

The square root of 12549979 is about 3542.5949528559. The cubic root of 12549979 is about 232.3883396458.

The spelling of 12549979 in words is "twelve million, five hundred forty-nine thousand, nine hundred seventy-nine".