13319857 has 8 divisors (see below), whose sum is σ = 14242176. Its totient is φ = 12412992.

The previous prime is 13319843. The next prime is 13319869. The reversal of 13319857 is 75891331.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-13319857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13319827) 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, 2053 + ... + 5554.

It is an arithmetic number, because the mean of its divisors is an integer number (1780272).

Almost surely, 2^13319857 is an apocalyptic number.

13319857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13319857 is a deficient number, since it is larger than the sum of its proper divisors (922319).

13319857 is a wasteful number, since it uses less digits than its factorization.

13319857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727.

The product of its digits is 22680, while the sum is 37.

The square root of 13319857 is about 3649.6379272470. The cubic root of 13319857 is about 237.0463035690.

The spelling of 13319857 in words is "thirteen million, three hundred nineteen thousand, eight hundred fifty-seven".