12679491 has 8 divisors (see below), whose sum is σ = 18442944. Its totient is φ = 7684520.

The previous prime is 12679481. The next prime is 12679507. The reversal of 12679491 is 19497621.

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 12679491 - 2⁶ = 12679427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12679411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192081 + ... + 192146.

It is an arithmetic number, because the mean of its divisors is an integer number (2305368).

Almost surely, 2^12679491 is an apocalyptic number.

12679491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12679491 is a deficient number, since it is larger than the sum of its proper divisors (5763453).

12679491 is a wasteful number, since it uses less digits than its factorization.

12679491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384241.

The product of its digits is 27216, while the sum is 39.

The square root of 12679491 is about 3560.8272915153. The cubic root of 12679491 is about 233.1849980101.

The spelling of 12679491 in words is "twelve million, six hundred seventy-nine thousand, four hundred ninety-one".