13279857 has 8 divisors (see below), whose sum is σ = 17725440. Its totient is φ = 8843760.

The previous prime is 13279853. The next prime is 13279909. The reversal of 13279857 is 75897231.

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

It is not a de Polignac number, because 13279857 - 2² = 13279853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13279853) 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, 2107 + ... + 5567.

It is an arithmetic number, because the mean of its divisors is an integer number (2215680).

Almost surely, 2^13279857 is an apocalyptic number.

It is an amenable number.

13279857 is a deficient number, since it is larger than the sum of its proper divisors (4445583).

13279857 is a wasteful number, since it uses less digits than its factorization.

13279857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743.

The product of its digits is 105840, while the sum is 42.

The square root of 13279857 is about 3644.1538112434. The cubic root of 13279857 is about 236.8087795111.

The spelling of 13279857 in words is "thirteen million, two hundred seventy-nine thousand, eight hundred fifty-seven".